Our source library

Sources & further reading

Provider pages establish what a brand markets. Clinical and regulatory sources establish the limits of the evidence. Accessed October 8, 2026.

1. CoreAge Rx Help Center — What products does CoreAge Rx offer?Provider catalog, updated October 5, 2026; formulations and consultation terms
2. Musely — The Anti-Aging CreamProduct page; price expressed as a monthly equivalent for a two-month supply
3. Curology — HydroTret Rx, formerly Future-Proof RxCurrent product name, ingredients and advertised prices
4. Agency — Night Renew RxProduct page; not every personalized formula contains tretinoin
5. American Academy of Dermatology — Retinoid or retinol?Dermatology guidance on retinoids, irritation and pregnancy
6. American Academy of Dermatology — How to select anti-aging skin care productsSunscreen, moisturizers, realistic expectations and label claims
7. FDA — Compounding and the FDA: Questions and AnswersCompounded drugs are not FDA-approved; oversight and evidence limitations
8. AAD: dermatologist-approved pregnancy skin careDermatology guidance on pregnancy-related ingredient precautions