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Human skin and its microbiota have a mutually beneficial symbiotic relationship, with the skin providing an optimal environment for resident microbiota while the microbiota help reinforce the skin's immunity by preventing colonization by harmful pathogens and contributing to skin acidification. [6] Skin care products that lower skin pH to 4.0 ...
Hyaluronic acid is also a major component of skin, where it is involved in repairing tissue. When skin is exposed to excessive UVB rays, it becomes inflamed , and the cells in the dermis stop producing as much hyaluronan and increase the rate of its degradation. Hyaluronan degradation products then accumulate in the skin after UV exposure.
The pH range is commonly given as zero to 14, but a pH value can be less than 0 for very concentrated strong acids or greater than 14 for very concentrated strong bases. [2] The pH scale is traceable to a set of standard solutions whose pH is established by international agreement. [3]
It also serves as a pH balancer in many different cosmetic products, ranging from cleansing creams and milks, skin lotions, eye gels, moisturizers, shampoos, shaving foams, TEOA is a fairly strong base: a 1% solution has a pH of approximately 10, whereas the pH of skin is less than pH 7, approximately 5.5−6.0. Cleansing milk–cream emulsions ...
Salicylic acid is an organic compound with the formula HOC 6 H 4 COOH. [3] A colorless (or white), bitter-tasting solid, it is a precursor to and a metabolite of acetylsalicylic acid (aspirin). [3]
Dimethylethanolamine (DMAE or DMEA) is an organic compound with the formula (CH 3) 2 NCH 2 CH 2 OH. It is bifunctional, containing both a tertiary amine and primary alcohol functional groups. It is a colorless viscous liquid. It is used in skin care products for improving skin tone and also taken orally as a nootropic.