Biophora is a medical brand. To purchase this product, you must first receive a virtual consultation to ensure that this product is best suited and safe for your use. Retinols are a non-prescription, non-irritating derivative of the Retinoid or Vitamin A family. The 15, 30 and 60 are arbitrary designations for creams containing 0.15%, 0.30%, 0.60%, and 0.90% percentages of Retinol and are generally targeted as tolerated to Sensitive Dry Skin, Element Exposed and Acne / Oily Skin types respectively.
Retinol is an active skin care ingredient so a patch test should be performed at least a day in advance to see if any reaction is experienced. Starting with Bioactive Retinol Cream 15, gradually increase the concentration only if or until each percentage is tolerated. It's generally recommended that the cream only be applied once weekly for the first few weeks, increasing to every other day for a month until it can finally be used nightly.