Secret of Medusa only uses the finest cuticle intact hair extensions. This means our hair has never been acid-dipped* *Acid Dipped - Refers to hair that has been stripped to avoid tangling. Acid-dipping greatly reduces the integrity, appearance and feel of the hair, especially after the first several washes. All cuticles are laying in the same direction. Make sure to note that many companies erroneously use the term "Remy," and are actually offering lower quality, cuticle-stripped hair. True Remy hair is smooth and lustrous.