Depilatory Emulsion Containing Paclitaxel and Preparation Method
Summary
USPTO published patent application US20260090965A1 for a depilatory emulsion containing paclitaxel by inventor Ming Xia. The invention comprises 10-20% oil, 8-12% humectant, 4-6% emulsifiers, 8-12% paclitaxel solution, and auxiliary ingredients, designed to target hair follicles while preventing dermal absorption. A stepwise cooling and gradual emulsification method ensures stable emulsion formation.
What changed
USPTO published patent application US20260090965A1 (filed September 4, 2025) for a depilatory emulsion formulation containing paclitaxel as the active ingredient. The composition includes 10-20% oil, 8-12% humectant, 4-6% auxiliary emulsifier, 4-6% emulsifier, 8-12% paclitaxel solution, 0.5-1.0% preservative, 0.01-0.05% mineral, 0.05-0.10% fragrance essential oil, with water as balance. The CPC classifications span A61K 8 (cosmetic preparations) and A61Q 9/04 (depilatory preparations), indicating both cosmetic and pharmaceutical classification intent.
Patent applications do not impose compliance obligations or require regulatory action. Manufacturers developing similar depilatory or topical cosmetic formulations containing active pharmaceutical ingredients should monitor whether product formulation or concentration thresholds may trigger FDA over-the-counter drug classification requirements beyond standard cosmetic regulation. No comment period or compliance deadline applies to this patent publication.
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Apr 2, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
DEPILATORY EMULSION CONTAINING PACLITAXEL AND PREPARATION METHOD THEREOF
Application US20260090965A1 Kind: A1 Apr 02, 2026
Inventors
Ming Xia
Abstract
A depilatory emulsion containing paclitaxel is made from the following raw materials: 10% to 20% of oil, 8% to 12% of humectant, 4% to 6% of auxiliary emulsifier, 4% to 6% of emulsifier, 8% to 12% of paclitaxel solution, 0.5% to 1.0% of preservative, 0.01% to 0.05% of mineral, 0.05% to 0.10% of fragrance essential oil, and water for balance. This depilatory emulsion is designed to allow the paclitaxel and other active depilatory components to be absorbed by hair follicles while preventing absorption into dermis, thereby achieving advantages of an effective depilation, safety, absence of odor, reduced risk of skin allergy, and suitability for continuous use. A preparation method of this depilatory emulsion employs stepwise cooling and gradual emulsification to ensure that all components are fully dispersed and uniformly distributed, forming a stable emulsion system, which has advantages of simple steps and good emulsion stability.
CPC Classifications
A61K 8/4973 A61K 8/06 A61K 8/19 A61K 8/342 A61K 8/345 A61K 8/361 A61K 8/375 A61K 8/498 A61K 8/4993 A61K 8/922 A61Q 9/04
Filing Date
2025-09-04
Application No.
19318701
Named provisions
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