It is generally recommended to avoid using oil or hair packs immediately after a keratin treatment. This is because the keratin treatment involves a chemical process that alters the structure of the hair, and using oil or hair packs can interfere with the process and reduce the effectiveness of the treatment.
It's best to wait at least 72 hours after the keratin treatment before using any hair care products, including oil or hair packs. During this time, it's important to avoid getting your hair wet, using any hair ties or clips, or doing anything that could cause your hair to become bent or kinked.
After the initial waiting period, you can gradually start incorporating oil or hair packs into your hair care routine. However, it's still important to use products that are gentle and nourishing for your hair, and to avoid using any products that contain harsh chemicals or sulfates that can strip away the keratin treatment and cause damage to your hair.