Alterna Caviar Anti-Aging Infinite Color Hold Vibracy Serum 1.7 oz This dual-purpose treatment can be used as a radiance-boosting leave-in treatment or mixed with any Alterna conditioner to transform it into a color-recharging masque. Formulated with our signature Caviar Extract and Dual Capture Complex that provides powerful color protection, this color retention blend leaves hair smooth and hydrated, rejuvenates color vibrancy as well as protects hair from heat up to 450F.