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Packed full of the same complexion changing benefits as the original Y Theorem Serum, this lightweight take on the classic is ideal for those preferring a lighter, more fluid product texture. Originally created to treat skin post-surgery, the restorative effects of this velvety serum instantly hydrate and restore radiance to the skin, while boosting collagen production and protecting against environmental damage. Perfect for humid conditions and oilier skin types to deliver a nourished and brightened complexion.