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All About Olaplex No.4 Shampoo & How It Can Transform Your Hair

Olaplex is a market leader thanks to their incredible solutions to the issues caused by the modern strains we put our hair through such as colouring, heat treatments and the desire for instant length or thickness. Olaplex in-salon treatments (No's 1 & 2) as well as the incredible take home treatment Olaplex No.3 are all designed to rebuild the integrity of your hair to allow you to continue to test it to the max.

So it made sense when Olaplex No.4 Shampoo & Olaplex No.5 Conditioner were launched last year to extend the care that Olaplex can provide into your daily cleanse and condition routine.

This article from Olaplex will introduce you to Olaplex No.4 Shampoo and explain how it works and the way it will make your hair feel incredible. There is a link at the bottom to the other articles on Olaplex No.3 Take Home Treatment plus the companion product Olaplex No.5 Conditioner.

PLUS we have some great value Olaplex duo packs and multi buy bundles and as always Laybuy will help make this essential hair care part of your weekly budget.

All About Olaplex No.4 Shampoo & How it Works

You may know Olaplex No.4 Bond Maintenance Shampoo rebuilds the bonds in the hair while cleansing, but do you know about its other rockstar benefits and properties? No.4 is a one-stop shop for almost any hair concern, from damage and moisture to hair growth and fullness.

The ingredient line up in a single bottle of No.4 makes the shampoo a one-stop shop for a well rounded, healthy, hair care ritual starting with Olaplex’s patented ingredient, Bis-Aminopropyl Diglycol Dimaleate. Olaplex developed and patented Bis-Aminopropyl Diglycol Dimaleate which became the first ingredient of it’s kind in the new bond builder category. This innovative ingredient protects, nourishes, and restructures hair internally.

Olaplex No.4 Hair Products

Olaplex is safe for all hair types, gentle, non-toxic, pH balanced, paraben free, color safe, vegan, sulfate free, cruelty-free, and SLS/SLES free.

As the active ingredient in Olaplex doesn’t address moisture,  hydrated hair was a thirst we wanted to quench in creating No.4. Ingredients like Coconut, Sunflower Seed Oil, Banana Fruit Extract, Noni Fruit Extract, and Glycerin are all a part of the No.4 formula. These ingredients not only condition the hair, but they also allow it to retain the moisture that is brought forth, leaving locks feeling luxurious and bouncy.

 Olaplex Number 4

Scalp care is a huge concern we wanted to address in created No.4. Promoting a healthy scalp can mean anything from reducing dandruff to stimulating the hair follicles to promote hair growth.

We’ve sourced Acetic Acid, Rosemary Leaf Extract, Biotin, Oregano Extract, Burdock Root Extract, and Sodium Hyaluronate for our shampoo to bring optimum health to your scalp. These ingredients aid in issues such as clarifying the scalp to retard flakiness and promoting the health of the scalp in order to foster scalp health and hair growth. Like many issues, most hair problems start at the root of the cause, making a healthy scalp a priority. In addition to overall scalp health and hair growth, Biotin also helps to give hair a new life for fuller, thicker-looking hair as well as improving the elasticity.

Elasticity in the hair is also addressed with the ingredient, Panthenol, which penetrates the hair shaft to help hair feel thicker.

What hair looks healthier than shiny smooth hair? No.4 has that covered too with Vitamin E, Apricot Kernel Oil, Pomegranate Seed Oil, and Fermented Argan Oil. Rich in Vitamins A & E, Omegas 6 & 9, these ingredients help increase shine, giving the hair a silky texture. The vitamins also add a protective layer to the hair for enhanced manageability and shine.

Fermented Argan Oil is a Korean beauty innovation for super hydration. It tames and smoothes frizz and flyaways. Why is it fermented? Fermenting the oil lowers the pH level which helps close cuticles helping them to lay flat. Fermented oils contain more potent vitamins and nutrients and have better absorption rates compared to non-fermented oils.

This leads us to our next round of ingredients which help support the strength of the hair, like Fermented Green Tea Oil which prevents split ends and breakage. Heliogenol derived from Sunflower Seed Extract also acts as a hair protectant against damage caused by free radicals and other hair processes or styling. 

Acai Berry Extract

via Top Images

Acai Berry Extract, a superfood high in antioxidants, also promotes healthy hair by strengthening each strand from the roots. It improves hair health and promotes new growth due to Acai’s high protein content, omega-3, 6 and 9 fatty acids as well as vitamins A, C, E and B. The berries also contain folic acid and zinc which help make hair roots stronger while promoting scalp health. The magnesium in these berries helps to control hair shedding as well.

We get so excited talking about the ingredients in our products because we know the role each and every ingredient plays in giving you the absolute best chance at for healthy hair and scalp. A little bit of Olaplex No.4 goes a long way, we recommend starting with a nickel sized amount and going from there. The lather is absolutely incredible and will work its way throughout the head as you cleanse!

Source: Jan 25, 2019

Here is What Our Customers Think:


Nat on Sep 24, 2018
"After a truck load of bleach and hair is finally healing up with olaplex No.4. I use No.3, leave it in overnight and wash with No.4. My hair is so smooth, healthy and shiny. I only wash it twice a week and dry shampoo in between. This shampoo isn’t greasy. It’s thick and lathers well, so a small amount goes a long way. Highly recommended:)"


Kelly, Creative DirectorKelly has been a hair stylist within the industry for more years than she’d like to acknowledge. Passionate about all aspects of fashion and hair trends. Coming back to Blue horsy from 9yrs in the London fashion scene, where she is the Master Stylist/Colourist, Education Manager, Online Creative Director.

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All About Olaplex No.5 Conditioner & How it Works

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