@hok.leo: Why do you need more yellow color from Retinal?🤔🤔 Because usually the more yellow the retinal formula is, the higher the retinal concentration or the fresher/more stable the retinal ingredient looks. That yellow tone comes naturally from retinal itself, unlike retinol, retinal has a deep yellow/orange color. That's why more yellow = more potent #celimaxRetinalChallenge #celimax #retinal @celimax.global