A dermatological preparation comprises an optimized, modified human embryonic fertility culture media with biguanides and/or functional equivalents and the use of said preparation for skin care, hair care, or body care, or dental procedures, or for regenerative medicine such as promoting wound or bone healing. The preparation is formulated to target the hypoxic microenvironment niches of the skin tissue in combination with optimal concentration of nutrients, ions and minerals; to stimulate existing stem cells to trigger the capacity of stem cells to divide and renew and differentiate into specialized cells; and to stimulate molecular and physiological processes, e.g., autophagy, to replenish the substrate pool through the recycling of organelles and the recycling of old damaged proteins and countering free-radical damage to promote anti-aging.

Products and methods are disclosed relating cosmetic products, personal care products, and cleaning products comprising N-acetyl cysteine. Products for personal care, household use, and other purposes are described with compounds that reduce the odor of N-acetyl cysteine. Skin-care serums with N-acetyl cysteine and Vitamin C are described, as are a variety of other cosmetic and personal care products.

The present disclosure concerns a hair care agent for the oxidative colouring or bleaching of hair, as well as a gentle method for the oxidative colouring or bleaching of hair, in which keratinous fibres are protected from oxidative influences.

A topical composition comprising a non-denatured, broken-up and dried Porphyridium biomass that is not further processed and a pharmaceutically or cosmetically acceptable carrier useful for cosmetic treatments is described.

The present invention relates to a method of coloring keratin fibers, especially human hair, which delivers intensive, long lasting, brilliant colors and provides improved grey coverage. Kit therefore is disclosed as well. The method of colouring hair involves treating hair prior to colouring with an alkaline reducing agent.

A water-in-oil personal care emulsion with water droplets size below 20 microns, the droplets containing solubilized cystine. A process of making an emulsion is also described.

A hair dye that is safe for human bodies and has a high hair dyeing effect is provided.

The hair dye consisting of: a reaction solution (A) comprising: a substance having a specific flavonoid skeleton represented by the following general formula (1); one type or two or more types selected from benzyl alcohol, vanillin, propylene carbonate, and γ-butyrolactone; and one type or two or more types selected from a thioglycolic acid salt, a thiolactic acid salt, cysteine and cysteamine, and a reaction solution (B) comprising an oxidizing agent.

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(In the formula, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.6, and R.sub.7 independently represent a hydrogen atom, a hydroxy group, or a methyl group; either one or both of R.sub.6 and R.sub.7 is/are a hydroxy group; R.sub.5 represents a hydrogen atom, a hydroxy group, a galloyl group, or a saccharide; and X represents >CH.sub.2, >C═O, or >CHOH.)

A solid cleansing product including at least a first surfactant and a second surfactant present in a combined surfactant weight amount, both of the first and second surfactants being free of sulfate-containing materials; at least a first buffering agent and a second buffering agent a present in a combined buffering agent weight amount; where the combined buffering agent weight amount is at least double the combined surfactant weight amount.

Compositions, kits, and methods for repairing bonds, for example, disulfide bonds, in hair or on the skin are disclosed. The compositions provide improved conditioning benefit for dry hair or moisturize the skin. The compositions also provide a long lasting moisturized feel and smooth feel to the skin or hair, without feeling greasy. The compositions contain one or more compounds that covalently bind at least two thiol groups in the hair or on the skin. Use of the binding compositions prevents reversion of the repaired bonds to their free thiol state, for at least one week or one month, or more, after a single application of the composition. Improved methods of styling hair, for example permanent hair waving, hair curling, hair coloring or highlighting, and hair straightening, are also provided.

The invention relates to stable, mild and moisturizing lamellar liquid cleansing compositions which possess a lotion-like appearance conveying signals of enhanced moisturization. However, these liquids often are either unstable or cause poor lather production and other sensory deficits The use of a specific ratio of total acyl isethionates to acyl glutamates or other divalent anionic surfactant in a structured liquid product improve stability and lather production, mildness and acceptable odor.