Agency and Curology provide custom-compounded tretinoin formulas.
Avoid buying from second-hand websites or vendors that do not require a prescription, as these products may be counterfeit or unsafe.
Tretinoin 0.1% is the highest standard concentration and can cause significant irritation.
Apply a pea-sized amount to a dry face only at night.
Buying online requires a prescription in many countries, including the USA, UK, and Canada, as it is a potent Retin-A medication. Legitimate Online Sources
Nurx and Musely offer name-brand and generic 0.1% cream starting around .
Common reactions include severe redness, peeling, stinging, and "purging" (temporary increase in acne).
Using the "sandwich method" (moisturizer, then tretinoin, then more moisturizer) can help manage dryness.
