Current Evening Routine: combining tretinoin and retinol...why would anyone do that?

My current evening routine involves increasing my retinoid tolerance and some good hydration. Morning Routine:    • My Summertime AM Skincare Routine with Ski...   Increase Skin Collagen:    • Simple skincare steps to maintain and boos...   Products mentioned: Bioderma micellar water: https://www.bioderma.us/all-products/... Lancome Bi-Facil: https://www.lancome-usa.com/skincare/... Clinique take the day off: https://www.clinique.com/product/1673... Zo Hydrating Cleanser: https://zoskinhealth.com/collections/... Skinbetter Clearning serum,Skinbetter alpharet overnight cream, Skinbetter eyemax Alastin restorative eye complex, Alastin skin nectar: https://www.aniamariemd.com/skin-care Video is not sponsored Website: https://www.aniamariemd.com Instagram:   / aniamarie.m.  . Disclaimer: This video is not intended to be a substitute for medical advice, diagnosis or treatment from your healthcare provider. This YouTube video is for medical educational/informative purposes only and is not equivalent to healthcare professional advice. The opinions stated in this video are my opinions/thoughts and not meant to diagnose, treat, or cure any ailment. I am not sponsored by any of the companies mentioned in this video.