OLAPLEX No.4Fine Bond Maintenance Volumizing and Strengthening Shampoo

I love how clean it leaves my hair, without grease, without frizz, and very hydrated, it's everything a dry hair could wish for, it has worked perfectly for me and its smell is wonderful My scalp appreciates using this product, love so mucho olaplex

Not enough moist for my hair. I used this shampoo and conditioner. My hair felt like straw. I was very disappointed. I have fine hair but highlighted. I returned.

Hair would feel greasy by second day and always fell flat. Doesn't lather well, needed to do 2-4 washes to feel clean.

Not seeing the volume that I thought this shampoo would provide.

The No.4FINE Bond Maintenance® Volumizing and Strengthening Shampoo is a standout option for anyone with fine hair who wants both body and strength—without compromising hair health. As someone who is always cautious with volumizing products (because they often dry my hair out or leave it feeling stripped), I was genuinely impressed with how balanced and effective this shampoo is. What immediately sets No.4FINE apart is that it's specifically formulated for fine and thinning hair, yet it still delivers the signature bond-building benefits Olaplex is known for. Many volumizing shampoos focus only on lift, but this one goes further by reinforcing hair from the inside out. Powered by Olaplex's patented bond-building technology, it helps repair broken disulfide bonds caused by heat styling, coloring, and everyday wear and tear—something fine hair desperately needs. From the very first wash, I noticed how lightweight the formula felt. The shampoo lathers beautifully without being heavy or overly creamy, which is crucial for fine hair that can easily get weighed down. It cleanses thoroughly, removing oil and buildup, yet never leaves the scalp feeling tight or stripped. Instead, my hair felt soft, clean, and surprisingly hydrated—without that flat, limp feeling that often comes after washing. One of the most noticeable benefits is the volume at the roots. My hair had a natural lift and bounce once it dried, even without styling products. The volume wasn't stiff or artificial; it looked healthy and touchable. Over continued use, my hair also felt stronger and more resilient, with noticeably less breakage during brushing and styling. Fine hair is prone to snapping, so this strengthening effect was a huge win for me. Another major plus is that No.4FINE is color-safe and sulfate-free, making it a great option for chemically treated hair. I've found that my color looks fresher for longer, and my hair has more shine compared to when I use traditional volumizing shampoos. It's also free of parabens and phthalates, which adds to the overall premium, clean-feeling experience. The scent is subtle and sophisticated—clean, slightly fresh, and not overpowering. It feels salon-quality without lingering too strongly, which I appreciate, especially when layering with other hair products. When paired with the No.5FINE Conditioner, the results are even better: volume without tangles, softness without heaviness. What I appreciate most about No.4FINE is that it doesn't force you to choose between volume and hair health. It proves that fine hair can have fullness while still being nourished and repaired. After several weeks of use, my hair looks thicker, feels stronger, and styles better overall. Blowouts last longer, and my hair holds shape without falling flat halfway through the day. While it is on the higher end price-wise, a little goes a long way, and the results justify the investment—especially if you struggle to find products that work well for fine hair without damage. This shampoo feels thoughtfully designed and truly delivers on its promises. Overall, No.4FINE Bond Maintenance® Volumizing and Strengthening Shampoo is an excellent choice for anyone with fine or thinning hair looking for volume, strength, and long-term hair health. It's effective, gentle, and delivers visible results—making it a staple-worthy addition to any fine-hair routine.