I did a big chop and have noticed inches of growth after using this product. Gya was prompt and helpful in the emailing process if I had any specific questions about which bar was which. Punctually, I received my order December 30th, 2023 and it is now just being finished in May of 2024! Very sustainable in its lifespan if you take it out of the shower after every use and allow it to dry. Overall, I will be ordering again❤️🪴.