JPH06321768A - Bathing agent composition - Google Patents

Abstract

PURPOSE:To obtain a bathing agent giving a moist feeling without drying of a skin. CONSTITUTION:This bathing agent composition specifically contains a hydrolyzed compound of silk and ascorbic acid or its derivative.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath composition having an excellent moisturizing effect on the skin.

[0002]

2. Description of the Related Art A bath agent composition is generally a mixture of an inorganic salt such as sodium sulfate and sodium hydrogencarbonate with a fragrance, a pigment and the like. It gives a relaxed feeling by recovering from fatigue by the blood circulation promoting effect and heat retaining effect of the action of inorganic salts.

[0003] However, many of the conventional bath compositions have a heat-retaining effect, but the skin is bulky and gives a feeling of tightness after bathing.

Further, in recent years, for the purpose of improving the tightness of the skin after bathing, oily substances, water-soluble polymers, plant extracts,
There are some examples containing milk components, etc., but they are not sufficiently effective or, on the contrary, they give a sticky feeling, and therefore, those having an excellent feeling of use are required.

The present invention has been made under such circumstances, and its purpose is to obtain a silk hydrolyzate and
By containing ascorbic acid or a derivative thereof, the effects thereof were effectively elicited, and the skin was made dry to give a moist feel, and further, there was no sticky feeling, and the present invention was completed.

[0006]

The present invention is a bath composition containing a silk hydrolyzate and ascorbic acid or a derivative thereof.

The present invention will be described in detail below. The silk hydrolyzate used in the present invention is a silkworm (Bombyx mori LI
NNAEUS) is a peptide obtained by a known hydrolysis method in the presence of acid or alkali, and is usually a solution of water or dilute ethanol. The total nitrogen amount (N: 14.01) of this solution is 0.015
2.5% is typical, but not limited to this range. The average molecular weight of the silk hydrolyzate is in the range of 200 to 1500 as measured by gel filtration. In some cases, it may be dispersed in a water-soluble powder crystal substance such as sodium sulfate or lactose. The blending amount of the silk hydrolyzate is not particularly limited, but the total nitrogen amount is 0.015 to 2.
In the case of 5% silk hydrolyzate, usually 0.025% or more, particularly 0.05% or more is preferable with respect to the entire composition.

Ascorbic acid and its derivative used in the present invention include ascorbic acid and its salt, ascorbic acid phosphoric acid ester and sulfuric acid ester and its salt,
Ascorbic acid stearic acid ester, ascorbic acid dipalmitic acid ester, monopalmitic acid ester and the like can be used. The amount of ascorbic acid and its derivative used in the present invention is not particularly limited, but is usually 0.05% with respect to the entire composition.
It is necessary to be 10% by weight. 0.05% by weight
If the amount is less, it is difficult to obtain a moist feel, and if it is more than 10% by weight, the feel of boiling water may be uncomfortable.

As the other components to be blended with the composition of the present invention together with the silk hydrolyzate and ascorbic acid or its derivative, the commonly used conventional underfill bath raw materials can be blended, but they are specifically exemplified. It is not limited to one.

A) Inorganic salts Sodium sulfate, sodium hydrogen carbonate, sodium chloride, calcium nitrate, potassium nitrate, sodium nitrate,
Aluminum sulfate, sodium polyphosphate, ammonium chloride, iron sulfate, sodium phosphate, magnesium sulfate, sodium thiosulfate, sodium sesquicarbonate, sodium sulfide, borax, calcium oxide, magnesium carbonate, potassium chloride, etc.

B) Organic acids Succinic acid, fumaric acid, malic acid, citric acid, tartaric acid, etc.

C) Fine powder Generally called cosmetic powder, and is a polymer such as acrylic resin, styrene resin, epoxy resin, nylon or polyethylene, or a copolymer of these polymers. Silicic acid, calcium silicate, natural aluminum silicate, synthetic aluminum silicate, zeolite, titanium oxide, talc, bentonite, iron oxide, etc.

D) Oils and fats Natural oils and fats such as soybean oil, bran oil, olive oil and castor oil,
Hardened oil obtained by hydrogenating these natural fats and oils. Synthetic glycerides such as glycerin tri-2-ethylhexanoate.

E) Waxes Beeswax, lanolin and the like.

F) Hydrocarbons Liquid paraffin, squalane, petrolatum, ceresin, etc.

G) Higher fatty acids Lauric acid, myristic acid, palmitic acid, stearic acid, linoleic acid, linolenic acid, etc.

(C) Alcohols Higher alcohols such as stearyl alcohol, cetyl alcohol and oleyl alcohol. Polyhydric alcohols such as glycerin, polyethylene glycol, dipropylene glycol and sorbitol. ethanol. Cholesterol, etc.

Ke) Esters Isopropyl myristate, cetyl octanoate, myristyl lactate, cholesterol isostearate, isopropyl adipate and the like.

(C) Water-soluble polymer Sodium alginate, xanthan gum, polyvinyl alcohol, carboxyvinyl polymer, etc.

Surfactant: sodium lauryl sulfate, sodium polyoxyethylene lauryl ether sulfate, lauric acid diethanolamide, glycerin monostearate, polyethylene glycol monostearate, polyoxyethylene glyceryl monostearate, propylene glycol monostearate, Sorbitan monolaurate, polyoxyethylene sorbitan monooleate, polyoxyethylene cetyl ether, polyoxyethylene hydrogenated castor oil, fatty acid soap, N-acyl glutamate, etc.

Si) Crude drug, herbs Chimp, Toki, carrot, peony, ginger, perilla, mugwort, chamomile, peppermint, psyllium, peach, aloe, loofah, etc.

S) Pigments Blue No. 1, Blue No. 2, Yellow No. 4, Yellow No. 5, Yellow 202
No. (1), riboflavin, etc.

C) Fragrances

(B) Antiseptics Paraoxybenzoic acid ester, sorbic acid, salicylic acid, sodium dehydroacetate and the like.

The bath composition of the present invention is usually used by dissolving 20 to 100 g in 180 l of hot water in a bath.

[0026]

EXAMPLES The present invention will be specifically described below with reference to Examples, but prior to this, evaluation items and methods will be described.

[Evaluation Method of Moisturizing Effect on Skin] Subject 1
0 people were selected, and the feet were partially bathed twice a day (morning, evening) for 5 minutes each in hot water containing the bath composition of Table 1 (50 g of the bath composition was added to about 180 liters of hot water), The condition of the skin surface was observed and further evaluated by a questionnaire.

Conditions; bath temperature: 41 ° C. partial bath period:
10 days Observation site: Side of forefoot Observation equipment; Enlarged video camera Score of observed skin condition; 5 points --- Curly cones and furrows are very clear. 4 points ──Curicles and grooves are clear. 3 points --- The skin ridges and furrows are slightly unclear. 2 points --- The ridge and the furrow are unclear. 1 point ---- The hills and furrows are unclear and the keratin is exfoliated.

Questionnaire Evaluation Method 5 points ── Very moisturized skin 4 points ── Slightly moisturized skin 3 points ─ ─ 2 ordinary points ─ ─ Slightly rough skin 1 point ─ ─ Extremely moist skin

Production Example Silk hydrolyzate used in the examples is silk fiber 0.2.
kg is immersed in 1 l of a 40% sulfuric acid solution, heated in a hot water bath at 50 to 60 ° C., then immersed in 18 l of water, left overnight, and suction filtered to remove impurities. The obtained filtrate is adjusted to pH 7.0 with 10N sodium hydroxide solution and suction filtered. The obtained liquid is heated in a hot water bath at 70 to 75 ° C. When quantified, the total nitrogen content was 1.2%. The chimp powder used in the examples was obtained by chopping 500 g of the chimp crude drug, adding about 10 times amount of 70% aqueous ethanol solution, extracting by boiling for 2 hours, filtering the extract solution, and spray drying the filtrate. And dried powder.

Examples 1 to 3 and Comparative Examples 1 to 3 A bath agent composition having a composition shown in Table 1 was prepared by a usual method of mixing powders or liquids, and the above test was conducted. In addition, the number of subjects who complained of sticky skin after bathing was also investigated. The results are shown in Table 2. The numbers in Table 1 show% by weight.

[0032]

[Table 1]

[0033]

[Table 2]

[0034]

The effect of the bath composition of the present invention is to give a moisturized feel to the skin, which is obtained by the synergistic effect of the silk hydrolyzate which is its component and ascorbic acid or its derivative.

Claims (1)

[Claims] 1. A bath agent composition comprising a silk hydrolyzate and ascorbic acid or a derivative thereof.