Deep-acting and utterly refreshing. Whether at an institute or at home – SEYO’s masks are the perfect finish for any facial care. COVER HYAL is compatible with all TDA Products. It stimulates the skin’s own collagen production, promotes cell renewal, and increases skin hydration, thus supporting the long-term effect of the preceding TDA treatment. And for problem skin, SEYO’s COVER PRODERM mask constitutes a real game changer. From bacterial issues to inflammatory irritation and acne – COVER PRODERM will help stressed skin.