DE4129769A1 - Material for reducing stage of hair waving process - comprises carrier impregnated with reducing agent to provide uniform application whilst avoiding contact with skin - Google Patents

Abstract

Material for the reducing stage of a permanent hair waving procedure comprises an adsorbent carrier (0.05-10 mm thick; of surface area 20-300 sq. cm.) impregnated with aq. keratin-softening agents. This material, which can be made hydrophobic in places and/or fashioned as a piece of variable thickness, is wound around the hair to be waved. The carrier material is pref. one or more of paper, fleece and textiles (of natural and/or synthetic fibre). Particularly it is 0.5-2.5 mm thick, with surface wt. 20-50 g/sq.m. and also has min. tear strength 10N (wet) and 20N (dry). USE/ADVANTAGE - Use of this material avoids contact between irritating chemicals and the scalp, so obviates the need for protective creams or strips of padding. It also ensures a more uniform distribution of treatment agents so prevents splitting of the ends of the hairs. Different impregnated materials can be made to suit particular requirements

Description

The present invention relates to absorbent carrier materials with water-soaked, keratin softening agents and then in the shaping hair to be wrapped.

For permanent hair shaping, the hair is changed according to the current status Technology with hard plastic and / or foam rubber and / or hard paper materials wrapped, impregnated with a keratin softening agent, after a the required exposure time with fixative or an oxidizing agent Solution treated and after rinsing off this fixative with an agent aftertreated or air dried.

It often happens when the preparations containing the reducing agent are applied Wetting the scalp and the areas of the scalp adjacent to the curlers. This causes skin irritation, such as redness and burning symptoms. In rare Cases occur a. also allergies. Furthermore, the current Permanent Hair Deformation Treatments & a. even the hair lengths, which are often porous are not spared.

The applied agents run unless they have an increased viscosity and thereby remain on the hairline from the hairline into the hair tips from. As a result, the hair tips are attacked relatively strongly, increasingly porous and brittle.

These embrittled hair tips are therefore often - after completing the Permanent forming treatment - removed by cutting.

Attempts have already been made to fix the problems described. With regard to the Skin contour protective creams described above are used over the however, permanent amounts of permanent wave agent also reach the unprotected skin can. Furthermore, the scalp is not protected by these protective creams. Also the Cotton strips that are placed on the skin contours do not cause 100% Permanent wave drain protection.  

With regard to the protection of the tip of the hair, two-phase preparations, for example, consisting of an active ingredient-strong, higher-viscous and an active ingredient weaker, watery-viscous formulation developed.

These combinations are said to be one by the milder liquid version cause gentler reshaping of the hair length.

However, the active ingredient-stronger formulation penetrates that on the hairline should remain, part of the relatively high amounts of active ingredient in the course of the exposure time through to the tips of your hair.

With these formulations, too, no targeted protection of the final hair lengths can be achieved be achieved.

Because of these problems, the task was to find a solution, the one targeted hair tip protection causes and a contact of the permanent wave agent with the Excludes skin.

It has now been found that absorbent soaked with keratin-reducing agents and wet strength backing materials as defined in claims 2 and 3, achieved even and permanent skin deformations that exclude skin irritation can be.

The soaked materials are wrapped in the hair, causing the Carrier materials squeezed out and the soaking fluids evenly distributed in the hair will.

The soaking liquids can no longer come into contact with the skin and none Cause skin irritation.

Furthermore, partial / stepwise Permanent hair deformations can be realized.

Accordingly, certain areas of the backing material become impregnated hydrophobic. This waterproofing can be made more waterproof by underlaying Foils are promoted. Provided, for example, one end of the carrier material would be pretreated accordingly and wrapped starting with this part, the tips of the hair are not wetted with the soaking liquid.

This would impregnate the hairline and hair length, in particular be permanently formed.  

The tips of the hair, which often still have residual frills, would be spared.

Another advantage of the method is that for every hair quality differently impregnated materials for targeted and gentle forming can be used.

With regard to the skin contacts no longer possible according to this method the application of cotton strips and skin contour protection creams omitted.

This could avoid time-consuming and costly work and materials will.

The following examples are intended to illustrate the subject matter of the invention without it to be limited to this.

The percentages given therein represent percentages by weight.

example 1 Impregnation liquid

10% thioglycolic acid
9% ethanolamine
1% coconut fatty acid diethanolamide
0.2% perfume oil
79.8%

Water, fully desalinated
100.0%

A 0.15 mm thick, soft, absorbent crepe material cloth with an area of 120 cm ^{2 is} immersed in this liquid. The cloth soaked is wrapped in the hair.

The user carries out, as when using the permanent wave agent Serving bottles, liquid-impermeable plastic gloves.

After about 20-30 minutes of exposure, the hair is rinsed with water, with treated with a solution containing oxidizing agents, then again with water rinsed and then the carrier materials are unwound from the hair solved. The hair can then be treated as desired.  

Skin irritation is avoided. The result is even, jumpy frills.

Example 2 Impregnation preparation

0.8% hydroxyethyl cellulose
20.0% ammonium sulfite, 34% aqueous solution
16.0% sulfurous acid (with 5% SO₂)
63.2%

Water, fully desalinated
100.0%

Airlaid paper with a mass per unit area of 47 g / m ² and a water absorption capacity of 2-4 g / 100 cm ^{2 is} dipped into the gel-like, thickened preparation and wrapped in the hair.

Dimensions and application as in example 1.

Example 3

2.0% cetylstearyl alcohol
0.2% sodium lauryl sulfate
10.0% cysteamine
5.0% ammonium carbonate
0.4% perfume oil
82.4%

Water, fully desalinated
100.0%

A 0.20 mm thick, absorbent fleece with a mass per unit area of 21-25 g / m ² , a water absorption capacity of 1.5-2.5 g / 100 cm ² and a longitudinal tensile strength of 45-55 N ( dry) or 35-45 N (wet) and an area of 150 cm ² immersed.

This soaked material is used as described in Example 1.  

Example 4

6.0% cysteine
3.0% ethanolamine
1.0% linoleic acid diethanolamide
0.2% perfume oil
89.8%

Water, fully desalinated
100.0%

The materials mentioned in Examples 1-3 are with this liquid soaked and / or

• a) in sealed edge bags made of composite film, for example made of paper on the outside, made of aluminum in the middle and polyethylene (75 microm) on the inside can, welded.
• Accordingly, single-portion wraps could be offered that Meet the requirements for the packaging material according to DIN 50 049-2.1.
• b) in resealable tubular bag packaging made of 120 micron thick Polyethylene that is welded on both sides and covered with polyethylene adhesive film is welded in.

In this case it would be multi-portion packaging or reclosable tubular bag packaging.

The impregnated materials would come from the packaging mentioned under a) and b) removed and wrapped in the hair.

Further application according to Examples 1 to 3.

Claims (8)

1. Materials and means for carrying out the reducing stage of permanent hair shaping, characterized in that

• a) 0.05 mm-10 mm thick, 20 cm ² -300 cm ² large absorbent materials are impregnated with keratin-softening water-containing agents;
• b) the materials can be partially hydrophobic and / or can be of different thicknesses in one piece.
• c) and these soaked materials are wrapped in the hair to be permanently deformed.

2. The method according to claim 1, characterized in that as carrier materials preferably absorbent papers and / or nonwovens and / or textiles Materials made from natural or artificial fibers or a mixture consist of natural and artificial materials, can be used.   3. Process according to claims 1 to 2, characterized in that the carrier materials preferably have a thickness of 0.5-2.5 mm, a basis weight of preferably 20-50 g / m ² and a tensile strength in the wet state of at least 10 Newtons and have a dry state of at least 20 Newtons. 4. The method according to claims 1 to 3, characterized in that the soaked Carrier materials in sealed edge bags or single-portion packaging and / or Polyethylene bags or multi-portion packaging can be welded. 5. The method according to claims 1 to 4, characterized in that the soaked Backing materials are underlaid with a waterproof film and the hair can be rolled on it. 6. The method according to claims 1 to 5, characterized in that as Keratin-softening preparations with which the carrier materials are impregnated be, aqueous low-viscosity and / or higher-viscosity gels and / or Emulsions can be used. 7. The method according to claims 1 to 6, characterized in that the keratin softening agent cysteine, N-acetyl-L-cysteine, cysteamine, Thioglycerin, a sulfite compound and / or a salt of a mercaptocarboxylic acid is. 8. The method according to claims 1-7, characterized in that as Impregnation amount, based on the weight of the carrier material, one to ten times is used.