5oz Color:For Fine & Thin Hair eCosmetics is an authorized retailer of Ouidad.. Provide long-lasting hydration in thicker curlsOur Curl Reboot Nourish + Strength Leave-In Mask is designed specifically for thick and coarse curls to provide long-lasting hydration and restore your natural curl pattern.Curl Reboot Nourish + Strength Leave-in Mask - For Fine & Thin Hair Size:8.