However, one downside is that it can be slightly greasy if too much is applied, so it's important to use it sparingly.

The Olaplex Purebeauty Salon Strength Protector Nourishing Hair Serum has impressed me with its performance. The serum has a light, pleasant smell and is easy to use, thanks to the pump on the bottle. It adds a noticeable shine to my hair, making it look softer and healthier. The serum is colorless, feels pleasant, and is not visible after application. I particularly enjoy applying it right after using a leave-in conditioner for the best results. 

Olaplex - LisaOst review for No. 9 Bond Protector Nourishing Hair Serum

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