I am not a big fan of vitamin C serums, but this one got me super excited, and this is why. It contains Ethyl ascorbic acid, which is known to be one of the most stable and potent vitamin C derivatives. So what did I do, use this for 3 weeks, non-stop, day and night, and here are my findings. ______ The Regena C20 Vitamin C serum contains 20% ethyl ascorbic acid with amino acids. While vitamin C helps illuminate the skin, and induce collagen production, amino acids help promote hydration and strengthen skin barrier function. FaceTheory brand also has a 30% formula of ethyl ascorbic acid for those interested in something more powerful. ______ FaceTheory Regena C20 Serum has a lightweight, transparent texture. Which feels slightly greasy when applied on the skin, accompanied with a warm sensation, but doesn’t leave skin feeling greasy after absorption. All you need to do is, gently massage till fully absorbed and don’t apply too much, 2-3 drops is sufficient. ______ The effect on my skin tone was astonishing. In Fact I can say I experienced all vitamin C benefits on my skin, improvement in skin tone and texture. Due to the stable nature of ethyl ascorbic acid, I confidently used my Vitamin C Serum without the fear of it getting oxidized or going bad. And a huge plus was that I never experienced any sort of irritation, no breakouts, redness nor inflammatory-irritation. ______ Rating 10/10 . . #skinalgo #skincareshelfie #sunscreenalways #fragrancefreeskincare#acnecommunity #kbeautyblog #abbeauty #skinthusiast #asianskin #abcommunity #skincareviral #fragrancefree #365skincare #oilyskincare #asianskincare #doublecleanse #acneprone #kbeauty #sensitiveskin #oilyskin #comboskin #dryskin #skinthusiast #koreancosmetics #skincarecommunity#affordableskincare #skinfluencer #suncare #acnejourney