Supercharged with an oil-soluble derivative of vitamin C (the Ascorbyl Tetraisopalmitate that gives this treatment its title) The Ordinary’s Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F offers … Ascorbyl tetraisopalmitate is an oil-soluble and extremely stable derivative of vitamin C. It is provided in this oil format formula in combination with vitamin F, also known as essential fatty acids. Hi! Sold by Stone Wall Shields and ships from Amazon Fulfillment. I’m currently using The Ordinary Ascorbyl Tetraisopalmitate Solution 20% + Vitamin F as my morning vit C serum. The Ordinary. Aside from the general benefits of pure vitamin C, ascorbyl … I don’t really think it’s doing much … This item: The Ordinary Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F 30ml $23.16 In Stock. I combine it with the Ordinary HA since it’s super watery. Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F is a Skin changing vitamin oil! I have seen a noticeable change in my skin’s texture & it’s really helped lighten my acne scaring/ …