Brand new, sealed in box. Retails at $75 Takes damage repair further – reconnects both polypeptide chains (and as a result, also reconnects disulfide bonds) for strength along the length + width of the hair - offering comprehensive, lasting damage repair. Restores hair from even extreme damage - by working at the innermost layer of the hair, core strength and elasticity are renewed for strong, smooth, bouncy hair. Delivers immediate and lasting results – hair is repaired from the first use and lasts past your next wash, for ongoing reparative benefits. Simplified repair - convenient, leave-in formula works in just 4 minutes, with no extra rinse required. Works on all hair types – because K18PEPTIDE™ works on a molecular level (where all hair is the same), this product is effective on all hair types.