N°4 Bond Maintenance Shampoo

4.4 • 25 Reviews

I think everyone can agree that Olaplex smells amazing. This shampoo actually gives more than you'd think and even a small dollop can produce so much shampoo and conditioning in the shower. I definitely feel a difference when using the shampoo for my dry hair.

The Olaplex No. 4 Shampoo and No. 5 Conditioner have transformed the way my hair feels and looks. They gently cleanse and deeply nourish without leaving any residue or heaviness. Since using them, my hair feels noticeably stronger, smoother, and less prone to breakage. They’re a reliable duo for maintaining healthy, resilient hair — especially if it’s been color-treated or damaged. 💆‍♀️✨

I <3 this shampoo so much; it came highly recommended by a friend who is a celebrity colorist. It's made my hair so much healthier and shinier. Just a little bit of product create a lot of lather. I also use the conditioner and have the smaller bottles for travel! Need to explore the rest of the product line.

Didn't see much of a difference when I used it a couple months ago.I've have curly hair that I dye often, so I really needed something to restore my damaged hair. Maybe I'll get back to the habit of using it and see if there's any change. It could also be that I'm just using the shampoo and it would be more effective to get their conditioner as well. They're really hyped up and at this price point, I want it to work for me.

I am in my 30s and have always had thick, fine hair (yes, those are two different things) that gets weighed down easily by moisturizing products. Unfortunately my hair also gets dry because I live in a super dry climate, so the struggle is real. I've tried Olaplex products before and have always been impressed by how effective they are, so decided to give this a shot. The first thing I noticed about it was how thick and condensed the shampoo is- I have long hair and still didn't need a lot to wash it. It has an amazing fine thick foam which I love, it feels very cleansing, without feeling stripping. The next thing I noticed was the delightful tropical scent- I want to say pineapple, maybe with some other tropical fruits mixed in. After washing my hair felt SUPER clean- like it got all the gunk out and allowed my hair to breathe. After using this shampoo my hair felt light and shiny. It's honestly one of my new favorites, and performs as well as or better than other super high end shampoos I've tried.

I have very thick, coarse hair that is just wavy enough to look frizzy if not blow dried. I also get highlights often. Olaplex is the only shampoo and conditioner that actually makes my hair soft and somewhat manageable. I bought the liter size of both, which cost about $90 each. But the product is so rich and concentrated that I think these bottles will last me almost a year. I also love the leave-in conditioner and the oil. Plus, it smells great!

I have completely changed my tune when it comes to this line. Frustratingly I spent a few years investing in their products and not getting the results others with hair similar to mine swore by. I have type 3C / 4A curls and like to wear my hair curly volumized and on the longer side. I like a little bit of frizz but within reason. So when I first started using olaplex I only use the shampoo conditioner and the number eight mask and couldn't understand why when I would follow with my regular products my hair didn't look like my friend's hair did. Overtime I learned that it really does require the whole line if you're looking for damage reversal like me. I use number 013 now every two weeks I follow them with four and five in the shower. Afterward I actually leave my number eight mask overnight. I rinse it out the next day and use the 67 and 9:00 all together so the concoction that I used to style My curls is about 35% number 6 35% number 9 and about 30% number 7 the serum. I sometimes will go over a week without washing which is great for My curls and I'll freshen it up with Ouidad leave in conditioner and olaplex 7 bonding oil to reset and I'm good to go. My hair has gotten so much healthier, prettier, longer since I have been following the olaplex steps as listed on their website especially not overdoing it with zero and three and following instructions as to whether hair should be damp or dry and whatnot. It really works if you work it ;) P.s. they make it super easy to try their products before purchasing full size and offer trial/travel sizes for most of them as well as sets that tend to combine the perfect products together.

These have made a world of difference making my hair nice and soft again

Olaplex is a standout brand that lives up to the hype, offering a scientifically backed solution for repairing and strengthening damaged hair. Whether you have color-treated hair, heat-damaged strands, or just want to improve the overall health and texture of your hair, Olaplex provides effective and noticeable results. While it may not be the most affordable option on the market, its premium performance and ability to truly restore hair make it a favorite for many.

This is a high-end luxury hair care looking feels great and it goes and applies. Well I appreciate it that combination for shampoo conditioner, and bonding oil. I think it makes for a really strong hair routine but of course for the price. I don’t use that every time.

Lovely scented product, and love how it makes my hair feel. It is pricy and the shampoo and conditioner bottles are very small in size. I would like to consider some of their styling products next time I make a purchase, I only tried the travel shampoo and conditioner.

Olaplex seriously saved my hair! I have very fine hair prone to easily breaking. I could never find a product that made it stronger but was also light enough not to leave my hair looking weighed down. The combination of these products have made all the difference. My hair looks and feels healthier!

Honestly olaplex was recommended to me by my hairstylist. I used it for maybe over a year. It’s quite pricey, but I don’t really think it did much for my hair for the prize. It’s a good product and you have to know how much to use.

I think the best part of using the shampoo and conditioner is there is hardly any fragrance. I like this so it's not overpowering. I use the No. 4 & 5 and my hair is so soft afterwards and it stays nice and clean for 2 days before it starts getting oily and in need of another wash. Also No 9 is good to smooth out any flyaways and dry ends.

Was recommended to get these products by my hairstylist. I have thin, blonde hair and it goes through a lot every two months so this brand has been a lifesaver. Makes my hair feel and look soft and strengthens it after every salon visit.

My all time fave

I have always had extremely dry hair, very normal for curly hair. When I moved to chicago I found a hair salon that introduced to me the best product I have ever tested on my hair, OLAPLEX! The packaging is clean and perfect, but the product in itself smells amazing and works great. I used to use it 3x a week and it saved my hair from the cold chicago winters

Love the way olaplex nourishes my hair the shampoo and conditioner make my hair feel like it’s healthy. The mask is wonderful also I put that on and walk around house. Try other products also to style hair they are wonderful so.

I've been using OLAPLEX for many years now, and I really loved how it left my hair, but lately, the results aren't the same. The one product I really love is their nighttime treatments. I think it's a slightly overpriced product. I recognize its quality, and it might not be for everyone.

I’ve really liked every Olaplex product I’ve tried so far, and the brand continues to impress me. I recently got to try their Fine Hair Shampoo and Conditioner, and they are absolutely perfect for my hair type!