One of my co-workers gave permission to share her photo so we can teach how to avoid this. There are many retinoid skin products that have gone over-the-counter in recent years. DIFFERIN GEL and Retinol, and more. If you are using these skin products, you must not wax your skin or you may get a burn like this. You are at risk of burn for at least four weeks after stopping your retinoid. Retinoids shed the dead skin cell layer (stratum corneum) and it takes at least 30 days for that layer of skin cells to renew.