U.S. patent application number 15/747457 was filed with the patent office on 2018-08-02 for process for treating hair fibres.
This patent application is currently assigned to L'OREAL. The applicant listed for this patent is L'OREAL. Invention is credited to Regis FEREYRE, Stefania NUZZO.
Application Number | 20180213910 15/747457 |
Document ID | / |
Family ID | 54145930 |
Filed Date | 2018-08-02 |
United States Patent
Application |
20180213910 |
Kind Code |
A1 |
FEREYRE; Regis ; et
al. |
August 2, 2018 |
PROCESS FOR TREATING HAIR FIBRES
Abstract
The invention relates to a process for treating hair fibres,
comprising (i) combing the hair fibres, (ii) applying a composition
to the hair fibres, (iii) treating the hair fibres by applying
steam, (iv) heat-treating the hair fibres by conduction and/or
radiation, step (i) being carried out before step (ii).
Inventors: |
FEREYRE; Regis; (Chavanay,
FR) ; NUZZO; Stefania; (Saint-Ouen, FR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
L'OREAL |
Paris |
|
FR |
|
|
Assignee: |
L'OREAL
Paris
FR
|
Family ID: |
54145930 |
Appl. No.: |
15/747457 |
Filed: |
July 27, 2016 |
PCT Filed: |
July 27, 2016 |
PCT NO: |
PCT/EP2016/067952 |
371 Date: |
January 25, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A45D 7/02 20130101; A45D
24/22 20130101; A45D 7/06 20130101; A45D 7/00 20130101; A45D
2001/008 20130101 |
International
Class: |
A45D 7/06 20060101
A45D007/06; A45D 24/22 20060101 A45D024/22 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 29, 2015 |
FR |
15 57256 |
Claims
1. A process for treating hair fibres, comprising: (i) combing the
hair fibres, (ii) applying a composition to the hair fibres, (iii)
treating the hair fibres by applying steam, (iv) heat-treating the
hair fibres by conduction and/or radiation, wherein the combing (i)
is carried out before the applying (ii).
2. The process according to claim 1, which is free of any combing
step after the applying (ii) within a period of 15 s.
3. The process according to claim 1, comprising a single combing
step.
4. A process for treating hair fibres, comprising: (i) a single
step of combing the hair fibres, (ii) applying a composition to the
hair fibres, (iv) heat-treating the hair fibres, wherein the
combing (i) is carried out before the applying (ii).
5. The process according to claim 4, comprising (iii) treating the
hair fibres by applying steam.
6. The process according to claim 1, wherein the treating (iii) is
carried out after the applying (ii) and before the heat-treating
(iv).
7. The process according to claim 1, wherein the combing (i) is
carried out for less than 5 min before the applying (ii).
8. The process according to claim 1, wherein the heat-treating (iv)
is carried out after the applying (ii).
9. The process according to claim 1, wherein steps of the process
are carried out by at least two different tools.
10. The process according to claim 1, wherein the combing (i) and
the applying (ii) are carried out using a single tool.
11. The process according to claim 1, wherein steps of the process
are carried out using a single tool.
12. The process according to claim 9, wherein steps of the process
are carried out by moving the tools along a lock of hair
fibres.
13. The process according to claim 1, the heat treatment (iv) being
carried out by contact of the hair fibres with hot surfaces.
14. The process according to claim 1, the heat treatment (iv) being
carried out at a temperature of 90.degree. C. to less than
230.degree. C.
15. The process according to claim 1, wherein the composition is in
the fluid state during the application (ii).
16. The process according to claim 6, wherein the treating (iii) is
carried out less than 5 min before the heat-treating (iv) and after
the applying (ii).
17. The process according to claim 8, wherein the heat-treating
(iv) is carried out less than 5 min after the applying (ii).
18. The process according to claim 11, wherein the single tool is a
device for shaping the head of hair configured to carry out process
steps successively in the same portion of hair fibres.
Description
[0001] The present invention relates to a process for treating hair
fibres.
[0002] It is known to smooth hair fibres with smoothing irons.
These irons make it possible to obtain smoothing of keratin fibres
at high temperature. However, in order to obtain a good smooth
appearance, it is necessary to carry out several passes of the
iron, which considerably extends the hair fibre treatment time.
Furthermore, the repeated application of the flat smoothing irons
can sometimes cause damage to the hair fibres due to the operating
temperature of the smoothing iron.
[0003] A device which makes it possible to apply a cosmetic product
to the hair, to expose the latter to steam, to subject said hair to
heat treatment and to comb it is known from international
application WO 2014/064660. The comb is placed downstream of the
member for applying the cosmetic product and the combing step is
therefore carried out after the product application step.
[0004] There is a need to develop a novel process for treating
human keratin fibres which makes it possible to fully benefit from
the properties of the cosmetic product applied and which is easy
and rapid to carry out.
[0005] The invention aims to meet this need, according to a first
aspect, by means of a process for treating hair fibres, comprising:
[0006] (i) combing the hair fibres, [0007] (ii) applying a
composition to the hair fibres, [0008] (iii) treating the hair
fibres by applying steam, [0009] (iv) heat-treating the hair fibres
by conduction and/or radiation, [0010] step (i) being carried out
before step (ii).
[0011] Carrying out the combing before the application of the
product makes it possible to facilitate the penetration of the hair
product into the treated lock.
[0012] In addition, this makes the treatment of the hair fibres
easier by facilitating the movement of the tool(s) carrying out the
process along the hair fibres, in particular by decreasing the
force which the user must exert in order to deposit a predetermined
amount of product.
[0013] The term "hair fibres" denotes human keratin fibres such as
the hair or synthetic fibres known as "extensions" which are added
to an individual's head of hair by various means, in particular by
adhesive bonding, this being in order for example to modify the
appearance of an individual's natural head of hair.
[0014] The steps of the process can be carried out by at least two
different tools.
[0015] Preferably, the combing step (i) and the step of applying a
hair product (ii) are carried out using a single tool.
[0016] As a variant, all the steps of the process can be carried
out using a single tool, in particular using a device for shaping
the head of hair configured to carry out the various steps
successively in the same portion of hair fibres. Preferably, the
steps of the process are carried out by moving the tool(s) along a
lock of hair fibres. Step (iv) of heat-treating the hair fibres can
be carried out using a hair smoothing iron.
[0017] According to this embodiment, the process of the invention
makes it possible to improve the smoothing of the hair, in
particular to decrease the hair volume.
[0018] The steps can be carried out successively in the following
order: [0019] (i), (ii), (iv) then (iii), [0020] (iii), (i), (ii)
then (iv), [0021] (iii), (iv), (i) then (ii), [0022] (iv), (iii),
(i) then (ii), [0023] (iv), (i), (ii) then (iii), or
preferentially, [0024] (i), (ii), (iii) then (iv).
[0025] Preferably, steps (i) and (ii) are carried out, for example,
during the same session at the hairdresser, with a period between
them of less than or equal to 5 min, better still less than or
equal to 1 min, even better still less than or equal to 30 s,
preferentially less than or equal to 15 s, and more preferentially
less than or equal to 5 s.
[0026] Preferably, all the successive steps are carried out with a
period between them of less than or equal to 5 min, better still
less than or equal to 1 min, even better still less than or equal
to 30 s, preferentially less than or equal to 15 s.
[0027] The process is preferably free of any combing step after
step (ii) within a period of 15 s.
[0028] Preferably, the process comprises a single combing step. The
fact that there is only one combing step makes it possible to
simplify the process without the efficiency of the treatment being
affected thereby.
[0029] Preferably, step (iv) is carried out after step (ii), in
particular less than 5 min, better still less than 1 min, after
step (ii), even better still less than 30 s, preferentially less
than 15 s, after step (ii).
[0030] Preferably, step (iii) is carried out after step (ii) and
before step (iv), in particular less than 5 min, better still less
than 1 min, even better still less than 30 s, preferentially less
than 15 s, before step (iii) and after step (ii).
[0031] The heat treatment can be carried out by contact of the hair
fibres with hot surfaces, in particular hot surfaces applying to
the hair a tension that makes it possible for example to smooth,
style or disentangle the hair fibres.
[0032] The heat treatment can be carried out at a temperature
greater than or equal to 90.degree. C., preferably greater than or
equal to 120.degree. C., more preferably greater than or equal to
140.degree. C., even more preferably greater than or equal to
170.degree. C., and/or less than 230.degree. C., preferably less
than 220.degree. C., more preferably less than 210.degree. C.; the
hot surfaces are preferably brought to such temperatures.
[0033] The amount of steam applied during step (iii) can be greater
than or equal to 1 g/min, preferably greater than or equal to 2.5
g/min and less than or equal to 60 g/min, preferably less than or
equal to 30 g/min, preferably less than or equal to 10 g/min, more
preferably less than or equal to 6 g/min, and even more preferably
less than or equal to 4.5 g/min. The steam applied to the hair
fibres during step (iii) may contain one or more cosmetic
ingredients and/or active agents such as a fragrance, and/or a hair
shaping and/or conditioning active agent.
[0034] The composition applied to the hair fibres is preferably in
the fluid state during the application.
[0035] The composition may be aqueous or anhydrous.
[0036] The composition may comprise at least one ingredient chosen
from solvents, surfactants, thickeners, preservatives, fragrances,
dye precursors, direct dyes, silicone or non-silicone and fixing or
non-fixing polymers, fatty substances, in particular mineral,
vegetable or synthetic oils, and waxes, reducing agents, oxidizing
agents, UV screening agents, conditioning agents, agents for
combating free radicals, sequestering or stabilizing agents,
antioxidants, acidifying agents, alkaline agents, volatile or
non-volatile silicones, reactive or chemically inert polymers,
pigments, solid organic or inorganic particles, vitamins, plant
extracts, or propenetrating agents or fibre-swelling agents.
[0037] Preferably, the composition is a hair fibre care
composition.
[0038] The step of applying the composition can be followed or
preceded by rinsing, by a step of washing the fibres, by a step of
hair shaping or controlling the shape, for example using a fixing
gel, a hair shaping mousse, a lacquer or a leave-in conditioner in
cream form, by a step of permanent, semi-permanent or temporary
dyeing, by a step of permanent deformation using a reducing agent
and optionally a fixative, by a step of alkaline straightening, in
particular with sodium hydroxide or with guanidine carbonate.
[0039] According to a second of its aspects, a subject of the
invention is a process for treating hair fibres, comprising: [0040]
(i) a single step of combing the hair fibres, [0041] (ii) applying
a composition to the hair fibres, [0042] (iv) heat-treating the
hair fibres, [0043] step (i) being carried out before step
(ii).
[0044] The process may, according to this aspect of the invention,
optionally comprise a step (iii) of treating the hair fibres by
applying steam.
[0045] The characteristics described in relation to the process
according to the first aspect of the invention also apply to the
process according to the second aspect of the invention.
[0046] The invention will be better understood from reading the
following detailed description of non-limiting exemplary
embodiments thereof and from examining the appended drawing, in
which:
[0047] FIG. 1 is a diagram illustrating an exemplary embodiment of
the process according to the invention,
[0048] FIG. 2 is a graph obtained according to Example 1 described
hereinafter,
[0049] FIG. 3 represents four locks of hair according to Example 2
described hereinafter, and
[0050] FIG. 4 represents a graph obtained according to Example 3
described hereinafter.
[0051] In the example illustrated in FIG. 1, the process comprises
four successive steps 10, 12, 14 and 16 carried out on a lock of
hair fibres by a device for shaping the head of hair. The device is
configured to perform the various steps of the process successively
on the hair fibres, by movement of said device along the lock of
hair, in particular over a portion of the hair fibres inserted
between two arms of said device, forming an iron.
[0052] Step 10 is a step of combing the hair, making it possible to
separate the hair fibres, before applying a composition in step 12.
The application of the composition 12 is preferentially carried out
immediately after step 10. The hair fibres are then subjected to a
steam treatment 14 which is carried out immediately after step 12.
Finally, the hair fibres are subjected to a heat treatment 16
intended to smooth them. They are brought into contact with hot
plates, in particular each arranged on one arm of the device,
between which they are held tight.
[0053] The application of composition 12 can be carried out using
an applying member placed on one of the arms and which holds the
portion of hair fibres undergoing treatment tight against a
counter-bearing surface of the other arm. As a variant, the
application of composition 12 can be carried out using two tools,
in particular an applying member and a member for distributing the
composition on the hair fibres.
[0054] As a variant, the various steps above are carried out with
at least two different devices. Steps 10 and 12 can be carried out
with a same device, for example a comb or a hairbrush applying the
composition, and steps 14 and 16 can be carried out by a same
device, in particular a smoothing device, or by two distinct
devices, in particular a device for applying steam and a device for
smoothing the hair.
EXAMPLE 1
[0055] A first device suitable for the treatment according to the
invention is used on locks of natural hair of Caucasian type,
having type IV curliness.
[0056] These locks are combed by passing through a comb and then
the haircare composition A, the formulation of which is given in
Table 1, is applied to said locks, by pinching the locks between an
applying member and a counter-bearing surface.
TABLE-US-00001 TABLE 1 Composition A. INCI Name % by weight
AMODIMETHICONE (and) TRIDECETH-6 (and) 1.0 CETRIMONIUM
CHLORIDE.sup.(1) PEG-40 HYDROGENATED CASTOR OIL 0.8 DIMETHICONE
(and) LAURETH-23 (and) 5.0 LAURETH-4 .sup.(2) BEHENTRIMONIUM
CHLORIDE 1.0 STEARYL ALCOHOL 1.5 Active agents 0.12 Fragrance 0.2
Preservative 0.9 Water qs 100 .sup.(1)XIAMETER MEM-8299 EMULSION
sold by the company DOW CORNING .sup.(2) XIAMETER MEM-2664 EMULSION
sold by the company DOW CORNING
[0057] The locks are then subjected to steam with a flow rate of
approximately 3.5 g/min, then the locks are pinched between two
plates of the device, heated to a temperature of 200.degree. C.
[0058] In parallel, a second device is used on locks of hair of the
same type as previously. This device makes it possible to carry out
the same steps as previously, but the combing step is carried out
after the application of the product.
[0059] For these two treatments, the time periods between the
various steps are approximately the same and the locks of hair are
from the same batch.
[0060] The combing force is measured using a tensile testing
machine, in particular a Lloyd LS1.RTM. with a 50 N sensor, by
measuring the mechanical strength of the device by passing over a
lock of hair. The results are given in Table 2 and in FIG. 2:
TABLE-US-00002 TABLE 2 Combing force measured for the first and
second devices, at equivalent amount of product applied COMBING
FORCE/ APPLICATION (a.u.) Standard Condition Mean deviation Second
device 3807.8 1126.9 First device 1356.1 413.6
[0061] It is noted, on the graph of FIG. 2, that when the combing
step is upstream of the applying step (application with the first
device), the force required by the user to move the device along
the lock of hair for the same amount of composition applied is on
average lower than when the combing step is carried out downstream
of the applying step (application with the second device).
[0062] Carrying out the combing step before the applying step
facilitates the movement of the device along the lock of hair while
preserving good composition application.
EXAMPLE 2
[0063] A first device suitable for the treatment according to the
invention is used on a lock of natural hair of Caucasian type,
having type IV curliness.
[0064] The lock is combed by passing through a comb and then
composition A is applied to the lock by pinching the latter between
an applying member and a counter-bearing surface. The lock is then
subjected to steam with a flow rate of approximately 3.5 g/min, and
then it is pinched between two plates heated to a temperature of
200.degree. C. The above treatment is carried out by passing the
device along the lock of hair for a period of 15 s.
[0065] In parallel, a second device is used on a lock of hair of
the same type as previously. This second device makes it possible
to carry out the same steps as previously, but the combing step is
carried out after the application of the composition. The treatment
time is the same.
[0066] For these two devices, the time periods between the various
steps are approximately identical.
[0067] Finally, a commercial smoothing device, in this case a
Styler.RTM. ghd gold classic, is used on a lock of hair of the same
type as previously. This smoothing device does not comprise any
combing means and means for applying the composition. It is passed
along the lock of hair 3 times, each pass lasting 8 s.
[0068] The locks of hair used for these various treatments are from
the same batch.
[0069] FIG. 3 presents four locks of hair. The first lock 20
starting from the left is a lock of hair of the type previously
described, which has undergone no treatment. The second lock of
hair 22 is a lock of hair of the same type, which has been treated
with the first device. The third lock of hair 24 is a lock of hair
of the same type, which has been treated with the second device.
Finally, the last lock of hair 26 is a lock of hair of the same
type, which has been treated with the commercial device.
[0070] It is noted that, when the combing step is carried out
upstream of the applying step, better smoothing is obtained. The
hair fibres are straighter and as a result exhibit better alignment
with one another. The hair fibres also occupy a smaller volume.
EXAMPLE 3
[0071] A first treatment according to the invention is carried out
on a lock of natural hair of Caucasian type, having type IV
curliness.
[0072] In a first applying step, a first device is used. The device
makes it possible to comb the lock by passing through a comb, then
to apply composition A to said lock by pinching between an applying
member and a counter-bearing surface. The first device performs two
passes lasting 15 s over the lock of hair.
[0073] In a second smoothing step, the lock of hair passes through
a commercial smoothing device, in this case the Styler.RTM. ghd
gold classic previously used. This smoothing device makes it
possible to pinch the lock of hair between two plates heated to a
temperature of 190.degree. C. It is passed along the lock of hair
twice, each pass lasting 15 s.
[0074] In parallel, a second treatment is carried out on a lock of
hair of the same type as previously. The second treatment is
identical to the first, except that the applying step is carried
out with a second device. The latter makes it possible to carry out
the same steps as previously, but the combing step is carried out
after the application of the composition. The treatment time and
the number of passes over the lock of hair are the same.
[0075] For the two treatments, the time periods between the various
steps are approximately identical.
[0076] The combing force as a function of the amount of product
applied is determined by measuring the resistance of each device to
the passing over a lock of hair using a tensile testing machine, in
particular a Lloyd LS1.RTM. with a 50 N sensor. The measurements
are taken for each applying and smoothing step.
[0077] The measurements are taken on three different locks of hair
of the abovementioned type.
[0078] The results are presented in FIG. 4.
[0079] It is noted, on the graph of FIG. 4, that when the combing
step is upstream of the applying step (application with the first
device), the forces required by the user to move the first device
and the smoothing device during the first treatment along the lock
of hair for the same amount of composition applied are on average
lower than those required with the second device and the smoothing
device during the second treatment.
[0080] Carrying out the combing step before the applying step
facilitates the movement of the devices along the lock of hair
while preserving good composition application.
* * * * *