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+ Hyaluronic Acid Simple. Pure. Natural.M3K SerumDermatologist Tested The Timeless serum collection contains a maximum concentration of active ingredients for intense anti-aging treatment. All-natural and paraben-free we do not use any excess or unnecessary ingredients. We like to keep it simple and effective. This product contains: Matrixyl® 3000 - a potent anti-wrinkle ingredient used as an alternative to Retin A. Increases collagen synthesis up to 350%. We use an 8% concentration for maximum benefit. Hyaluronic Acid - a powerful hydrating and moisturizing ingredient that can hold up to 1000x its weight in water.