Personal care formulations containing alkyl ketal esters having the structure ##STR00001##
wherein a is 0 or an integer of 1 to 12; b is 0 or 1; R.sup.2 is a divalent C.sub.1-8 group optionally substituted with up to 5 hydroxyl groups; and R.sup.1 is C.sub.1-6 alkyl.

Disclosed herein is a dispersion comprising a liquid or semi-solid continuous phase, a dispersed solid phase comprising a plurality of organic, inorganic or inorganic-organic particles, and an alkyl ketal ester having the structure ##STR00001##
wherein a is 0 or an integer of 1 to 12, specifically 1 to 6, more specifically 1 to 4; b is 0 or 1; R.sup.2 is a divalent C.sub.1-8 group optionally substituted with up to 5 hydroxyl groups; and R.sup.1 is C.sub.1-6 alkyl, and wherein at least a portion of the alkyl ketal ester is present in the continuous phase, on a surface of at least some of the dispersed particles, or a combination thereof.

Disclosed herein is a dispersion comprising a liquid or semi-solid continuous phase, a dispersed solid phase comprising a plurality of organic, inorganic or inorganic-organic particles, and an alkyl ketal ester having the structure ##STR00001##
wherein a is 0 or an integer of 1 to 12, specifically 1 to 6, more specifically 1 to 4; b is 0 or 1; R.sup.2 is a divalent C.sub.1-8 group optionally substituted with up to 5 hydroxyl groups; and R.sup.1 is C.sub.1-6 alkyl, and wherein at least a portion of the alkyl ketal ester is present in the continuous phase, on a surface of at least some of the dispersed particles, or a combination thereof.

Treatment of skin tissue with photoactive materials and light, such as nanoparticles and formulations which are useful for cosmetic, diagnostic and therapeutic applications to mammals such as humans. In particular, embodiments of thermal treatment of the skin surface with metal nanoparticles in surfactant containing solutions are disclosed.

Treatment of skin tissue with photoactive materials and light, such as nanoparticles and formulations which are useful for cosmetic, diagnostic and therapeutic applications to mammals such as humans. In particular, embodiments of thermal treatment of the skin surface with metal nanoparticles in surfactant containing solutions are disclosed.

A personal care composition comprising a zinc acetate.

The present disclosure is directed to depilatory compositions comprising a depilatory active, alkali metal hydroxide and an aminoalkylpropanol. The compositions have a pH in the range of from 10 to 12.5. The depilatory active may contain a thiol group, the alkali metal hydroxide may comprise potassium hydroxide, and the aminoalkylpropanol may comprise aminomethylpropanol. The composition may be, for example but not by way of limitation, a gel, mousse, foam, cream, lotion or peelable film, such as a translucent or transparent gel. The depilatory compositions provide effective hair removal yet are well tolerated by the skin and allow for acceptable application times of the composition. The present disclosure further provides a depilatory composition comprising urea, a carbomer, and a gum; these compositions may or may not comprise aminoalkylpropanol.

The present disclosure is directed to depilatory compositions comprising a depilatory active, alkali metal hydroxide and an aminoalkylpropanol. The compositions have a pH in the range of from 10 to 12.5. The depilatory active may contain a thiol group, the alkali metal hydroxide may comprise potassium hydroxide, and the aminoalkylpropanol may comprise aminomethylpropanol. The composition may be, for example but not by way of limitation, a gel, mousse, foam, cream, lotion or peelable film, such as a translucent or transparent gel. The depilatory compositions provide effective hair removal yet are well tolerated by the skin and allow for acceptable application times of the composition. The present disclosure further provides a depilatory composition comprising urea, a carbomer, and a gum; these compositions may or may not comprise aminoalkylpropanol.

A depilatory wax additive and process. The depilatory wax additive may modify a depilatory hard wax composition to include visual, olfactory, or skin treatment components. A depilatory wax additive may include molded hard wax component and glitter, a color modifier, a scent modifier, or a skin treatment. A preexisting hard wax composition of solid particles may be heated to a liquid. The depilatory wax additive may be added to the liquefied preexisting hard wax composition, mixed, and heated to disperse the glitter, a color modifier, a scent modifier, or a skin treatment in the wax mixture.

A depilatory wax additive and process. The depilatory wax additive may modify a depilatory hard wax composition to include visual, olfactory, or skin treatment components. A depilatory wax additive may include molded hard wax component and glitter, a color modifier, a scent modifier, or a skin treatment. A preexisting hard wax composition of solid particles may be heated to a liquid. The depilatory wax additive may be added to the liquefied preexisting hard wax composition, mixed, and heated to disperse the glitter, a color modifier, a scent modifier, or a skin treatment in the wax mixture.