Aquick look at The Ordinary Resveratrol & Ferulic Acid reviews. Currently scores 4.1/5 on the Deciem website. 69% of the Deciem Addicts love it. 71% say it has improved their skin. 66% will repurchase it. Antioxidant Support. Signs of Ageing. Textural Irregularities. DECIEMsite says DO NOT mix vitamin C with water-based solutions. They recommend L-Ascorbic Power + Resveratrol, Anybody knows if the following will be OK to mix? 2 drops: Ascorbic Acid 8% + Alpha Arbutin 2%. 2 drops: Resveratrol 3% + Ferulic Acid 3%. 2 drops: 100% Organic Cold-Pressed Rose Hip Seed Oil [UPDATE] From a DECIEM representative Usea digital scale to weigh your alpha arbutin. While it hasn't been studied thoroughly, alpha arbutin's shelf life is roughly 12 months. If you plan on using it every day, use 20-25 grams ( oz) or more. If you only plan on using alpha arbutin on occasion, use 10-15 grams (0.35-0.53 oz). Retinoids+ AHA/BHA. damages skin moisture barrier and can cause skin irritation, redness, dry skin over time; use separately and sparingly. Retinoids + vitamin C. may cause over-exfoliation Toget rid of pigmentation- AA has done wonders within just 1 month of usage (as opposed to months of Vit C) For overall glowy skin and brightening - Vit C in the AM followed with a good sunscreen! Basically, you can incorporate both into your routine for maximum benefits! Atthis point, use niacinamide that will help you control oilyness and vitamin c for fading pigmentation. When you get your oilyness under control, ditch niacinamide and then incorporate alpha arbutin or tranexamic acid (any one of this and not both). Its better not to use too many serums in a routine. 1. ContractPurple5563 • 7 mo. ago. Alphalipoic acid diminishes fine lines, gives skin a healthy glow, and boosts levels of other antioxidants, such as vitamin C. Alpha-lipoic acid can enter all parts of a skin cell. Due to this Ive googled and read many post from people who think HA and/ or Alpha Arbutin + HA are ruining their skin. Add me to the list. I'm not going to lie, I'm very new at trying to develop a regular skin care routine. I took the test on TO website and got every recommended product for my skin type and for my desired results. RaolnQ.