New, unused - still in original box - no longer needed as I have moved to another brand (but this saved my hair when it was in its worst shape) Details: The Nº.7 Bond Building Oil, infused with patented OLAPLEX Bond Building Technology, is a weightless, reparative styling oil that dramatically increases shine, softness and color vibrancy while providing heat protection of up to 450º F (232º C). Benefits: 1. Nº.7 Bond Building Oil strengthens and protects for visibly healthier-looking hair, enhances shine, softness and color vibrancy and provides heat protection up to 450ºF (232ºC). 2. Nº.7 Bond Building Oil restores healthy appearance and texture. 3.Nº.7 Bond Building Oil is Sulfate Free and PH balanced. How to use: 1. Unscrew the lid and turn bottle upside down. 2. Gently tap your index finger on the bottom of the bottle to dispense a metered drop. 3. Apply a small amount to damp or dry hair. 4. Style as you normally would.