Silky Straight 1/2 or full lace unit is 150% density, adjustable strap and combs for extra security.The Hair Mi Amour Collection hair is top quality. This means our hair is constructed from one donor with the full strand laid in the same direction. Any color application will effect the integrity of the hair so it is recommended to be performed by a licensed professional. The use sulfate free shampoo and conditioner is suggested for maintaining your extensions or unit. Customization on units are shipped ready to wear. Prepare your head with a flat braided foundation for the best results.