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US 2025/0017828 A1Published application
Particles containing coloring agents and methods of using the same
AssigneeEphemeral Solutions, Inc.
InventorsVandan K. SHAH, Brennal PIERRE
Life of this patent
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Abstract
The disclosure relates to a composition that is designed to be administered to a subject intradermally for treating pigmentless skin or creating a temporary tattoo. The composition comprises particles having a polymeric shell and a core that includes a coloring agent. The particles are in a carrier solution at a concentration that is cosmetically effective to delay the bioabsorbance and/or biodegradation of coloring agent in a subject's skin. Bioabsorbance and/or biodegradation of the particles fades the tattoo until it is no longer visible.
Claims17
-52. (canceled)
A semi-permanent tattoo composition comprising:
- (i) a plurality of particles, wherein each particle comprises:
- (a) a polymer that is bioabsorbable and biodegradable, wherein the polymer comprises poly D-lactic acid (PDLA), poly L-lactic acid (PLLA), poly(lactic-co-glycolic acid) (PLGA), polycaprolactone (PCL), or polyethylene glycol (PEG);
- and
- (b) a coloring agent having a molecular weight of 5 to 10×106 Daltons;
- and
- (ii) a carrier solution,
- wherein the coloring agent is incorporated in the polymer's matrix;
- and
- wherein the particles are present in the carrier solution at a concentration of about 5% w/v to about 60% w/v of the carrier solution, wherein about is ±20%.
6 more elements
Dependencies are inferred from the claim text.