NULASTIN NuPROTECT Leave-In Primer is an excellent hair care choice. This styling primer hydrates, detangles, tames frizz, and enhances shine. As a leave-in conditioner, it reduces breakage and protects hair from heat up to 450°F/ 232°C. The silicone-free and color-safe formula leaves hair silkier, stronger, and healthier. Overall, it supports elastin replenishment.