Olaplex No. 4 Bond Maintenance Shampoo, Repairs, Strengthens, & Nourishes All Hair Types, Adds Shine & Leaves Hair Feeling Soft, 250ml

great product. Made my hair much healthier, and although it is expensive, you only need a little bit of the product as it bubbles up hugely, therefore you don't need a lot.

lovely product. Only use a little - it lathers really well.

You can feel the quality in this shampoo and yes, it’s not cheap but you are paying for a product that very little goes a long way.I use the size of a 20p piece in the palm of my hand and it lathers up into a luxurious foam. Hair is left shiny, smooth and my hairbrush glides through it.A 200ml bottle can last over 6 months if used sparingly, you do need to add a bit more water to get it to lather.Most beneficial when used with Olaplex No3 product first (pre shampoo treatment) and followed by No5 which is the conditioner.My hair was so dry and breakage was bad before using this product. I can now also go a day longer between washes, would recommend.

Brilliant!

Honest review here. I'm growing my hair from a short bob and one side at the top is slightly heat damaged. I thought I'd try the pre treatment and shampoo to see if it helped first before I bought the conditioner and oil. I put the pre treatment on for 10 mins...then washed my hair twice with the shampoo (u need so little as it lathers like nothing I've ever know lol) I then used bed head heat protector (smells like strawberries and is very good!) - after the first use my hair felt thicker...glossier and in general just so healthy. Wasn't expecting it to come out so well tbh. So glad I bought it and yes worth every penny! If u thinking of buying it please don't hesitate. Game changer!

It’s quite expensive but I think it is worth it. You only need to use a very little and it lathers really well. I felt my hair looked slightly thicker and definitely a bit brighter. It’s not a miracle worker but it is one of the best I have tried.

Super smooth texture, ketratin like parlour treatmentEven my husband uses it so its sort of unisex

I almost didn't but this because of the bad press machine at play. But because l had great results for my 4b/c hair with OLAPLEX No.0 and No.3 l was advised by CynDoll from YouTube to use No.4 and No.7, and very happy that l continued to use this quality haircare line. After all, Olaplex are fighting the negative allegations, which is a testament to their confidence with Olaplex a quality product. No. 4 is super rich and hydrates the hair follicles which is needed for hard water Britain. A little 20p size goes a long way. Value for money and now a permanent staple for my haircare regime.