Our US cosmetic ingredient review service evaluates cosmetic formulations to support compliance with United States cosmetic regulations, including FDA requirements and California Proposition 65 considerations. This review helps brands identify potential regulatory and disclosure risks before products enter the U.S. market.
Because cosmetic regulation in the United States is driven by ingredient safety and transparency, reviewing formulations early plays a critical role in risk management. Therefore, a thorough ingredient review helps reduce the likelihood of reformulation, labeling changes, or downstream compliance issues.
A US cosmetic ingredient review examines each component of a formulation against applicable U.S. regulatory requirements. The review evaluates whether ingredients are suitable for cosmetic use, whether restrictions apply, and whether additional compliance considerations may be triggered.
Cosmetics in the United States are regulated by the U.S. Food and Drug Administration under the Federal Food, Drug, and Cosmetic Act. In addition, products sold in California may be subject to California Proposition 65, which requires warnings for certain chemicals associated with cancer or reproductive harm.
As part of this review, we identify ingredients that may appear on the California Proposition 65 chemical list. While Proposition 65 is a state-level requirement, it often affects national product launches because many brands distribute products in California.
This screening helps brands determine whether further evaluation, exposure assessment, or warning considerations may be necessary. Oversight of Proposition 65 is administered by the California Office of Environmental Health Hazard Assessment.
Our ingredient review typically includes:
Evaluation of each ingredient for cosmetic suitability
Identification of prohibited or restricted substances
Screening for California Proposition 65–listed chemicals
Assessment of concentration-based limitations, where applicable
Identification of potential labeling or disclosure considerations
Clear documentation supporting compliance review
In addition, we provide practical regulatory context to help brands understand how ingredient choices may affect market access.
US cosmetic ingredient reviews are commonly requested for:
Skin care and personal care products
Hair care and cleansing formulations
Cosmetic sticks, balms, and oils
Products preparing for national or California market launch
Because ingredient requirements differ across regions and states, a combined FDA and Proposition 65 review supports more confident product decisions.
Pentyl Labs provides clear and practical cosmetic ingredient reviews that account for both federal and state-level requirements. Moreover, we support related services such as label review, safety assessments, and Proposition 65 evaluations. As a result, our reviews integrate smoothly into broader product development and compliance workflows.
📩 Contact [email protected] to request a US Cosmetic Ingredient Review.