Here's why:
* Keratin Needs Time to Set: The keratin needs time to fully penetrate the hair shaft and bond properly. Washing it too soon can disrupt this process and wash away the treatment before it's had a chance to work.
* Risk of Undoing the Treatment: Water and shampoo can interfere with the keratin's bonding process and undo the straightening effect, leaving your hair frizzy or uneven.
Some salons recommend waiting longer than 72 hours, so it's best to follow the specific instructions given by your stylist. They know the products they used and can give you the most accurate advice.
In addition to waiting to wash:
* Avoid getting your hair wet in any way (swimming, rain, excessive sweating) during the waiting period.
* Avoid using hair ties, clips, or headbands: These can create creases in your hair while the keratin is setting.
* Sleep with your hair down on a satin or silk pillowcase to prevent frizz and creases.
Following these guidelines will help ensure your keratin treatment lasts as long as possible and gives you the best results.