Curl activation & final hold. What it does: KMS California Curl Up Bounce Back Spray is a curl-activating spray for firm hold. Exceptional curl retention. Provides heat protection. Hold: 3/5. Shine: 4/5. Directions for use: Spray KMS California Curl Up Bounce Back Spray onto towel-dried hair & scrunch. Diffuse or air dry. Use on dry hair to reactivate & maintain curls.