They are "transforming hydrogels" that turn transparent as actives absorb over 2-3+ hours.
Bio-Collagen Real Deep Mask(Pink/Transparent): Focuses on elasticity, tightening pores, and deep hydration using ultra-low molecular collagen and oligo-hyaluronic acid. Best for anti-aging and firming.
Hydro Cera-nol Real Deep Mask (Blue): Focuses on intense hydration, barrier repair, and soothing for dry or sensitive skin using ceramides and panthenol.