This video will show you how to layer The Ordinary Lactic Acid 5% + HA + Niacinamide 10% + Zinc 1%. "Niacinamide is quite stable, but in the right conditions can hydrolyze (breakdown in water) to niacin." https://kindofstephen.com/niacinamide... Lactic Acid 5% + HA Targets - Uneven tone, Textural Irregularities, Fine Lines Format - Water-Based Serum Regimen Step - Before Oils/Creams Conflicts -Do not combine with other strong acids, EUK 134 0.1% or Peptides. Time of Use - Ideally PM Niacinamide 10% + Zinc 1% Targets - Regulates Sebum, Minimizes Pores Format - Water-Based Serum Regimen Step - Before Oils/Creams Conflicts - Pure Vitamin C (ELAA/LAA) Time of Use - AM, and PM https://deciem.com/ Disclaimer: The videos on this channel are not sponsored, and no affiliate links are used. Any products featured in these videos are ones that I have purchased at my own expense. Therefore, I stand by the recommendations I make and believe the featured products are worth the cost. All information presented on this channel is for news, education, and entertainment purposes only. Although I do my best to provide accurate information, it is not a substitute for medical skincare advice. Always consult with a professional dermatologist or doctor in your area before implementing any skincare advice shared on this channel.