Ultra-mild, concentrated and self-preserving cleansing compositions for personal care
The invention relates to extremely mild, concentrated cleansing compositions to create personal care formulations. The mildness of composition towards the skin is due to the synergy of constituent members. More specifically, the compositions comprise of cocamidopropyl PG dimonium chloride phosphate, an alkyl polyglucoside, and sophorolipids to give the superlative performance in terms of foam and lather with extreme gentleness towards the stratum corneum, the uppermost layer of the skin. The concentrated, self-preserving, ultra-mild compositions of the present invention are particularly suitable for cleansing of sensitive skin (babies and sensitive body parts), irritated skin (medically compromised) and very dry skin (senior citizens). Also process for preparing such ultra-mild cleansing composition is provided.
1 . A concentrated aqueous mild cleansing composition comprising;
a. alkyl amido propyl PG dimonium chloride phosphate of Formula I, wherein R is selected from C 7 -C 17 saturated or unsaturated fatty acids from a vegetable source; and x+y=3;
b. a sophorolipid of Formula IIa of IIb, wherein R is H or COCH 3 ;
c. alkyl polyglucoside of Formula III, wherein R is an alkyl group selected from C 8 and C 10 , and x is a degree of polymerization ranging from 1.1 to 3.0;
wherein the ratio of a to b to c is 3:1:1;
d. 1 to 4%, by weight of the total composition, of a mixture of N-capryloyl glycine and N-undecylenoyl glycine of Formula IV, wherein R is C7, or C10 with terminal unsaturation at C1, in a ratio of 1:1; and
e. 0.2 to 2.0%, by weight of the total composition, of an additive,
wherein % solids content of a+b+c+d+e combined is a minimum of 45% by weight of the total composition; and water content is a maximum of 55% by weight of the total composition.
2 . The concentrated aqueous mild cleansing composition of claim 1 , wherein the pH of the composition ranges from 3.0 to 5.6.
3 . The concentrated aqueous mild cleansing composition of claim 1 , wherein the irritancy score of the composition is less than 5.0 when evaluated by HET-CAM.
4 . The concentrated aqueous mild cleansing composition as claimed in claim 1 , wherein the sophorolipid of Formula IIa or IIb is biosynthesized from glucose with oleic acid or vegetable oil using Starmerella bombicola.
5 . The concentrated aqueous mild cleansing composition as claimed in claim 1 , which is preservative free.
6 . A personal care formulation comprising the concentrated aqueous mild cleansing composition of claim 1 and other surfactants and additives, wherein the pH of the personal care formulation ranges from 3.0 to 5.6.
7 . The personal care formulation of claim 6 , wherein the personal care formulation is selected from body wash, facial cleanser, anti-acne face wash, intimate feminine wash, shampoo, and baby wash.
8 . The concentrated aqueous mild cleansing composition of claim 1 , wherein the additive is selected from sodium gluconate, citric acid, tocopherol, and other personal care acceptable additives.