A source-backed topical hyaluronic acid library covering hydration, molecular weight, skin distribution, wrinkle evidence and claim boundaries.

A source-backed library mapping topical niacinamide evidence for barrier support, pigmentation, signs of ageing and sebum—with study limitations.

Evaluate skincare claims across directness, study design, bias, precision, replication and scope with the DERMIS evidence framework.

Calculate applications, cost per use and monthly skincare spend using transparent dosage, waste and price assumptions.

Audit “clinically tested,” “dermatologist tested,” “natural,” “hypoallergenic” and other beauty claims with a regulator-sourced evidence map.

Calculate sunscreen mass from skin area using the 2 mg/cm² SPF-testing benchmark, then calibrate finger rules, coverage and cost per use.