Knight and Wilson PurePlex Hair Dye Review

Updated on February 11, 2020
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My articles surround a variety of topics from health and beauty, fashion and tattoos to mental health.


OlaPlex has taken the beauty community by storm, and right now it's all anyone, from beauty bloggers to hair care professionals can talk about. But with the expensive price tag attached, it's not exactly accessible for everyone. Tempted by the countless positive reviews about this so-called holy grail of hair care, but not having the budget to see if it is truly as miraculous as everyone has been saying, I decided to go on the hunt for a more affordable alternative...

While stalking Superdrug's website (again), I came across a new hair dye by a brand that I hadn't previously heard of, Knight and Wilson; who have created their own OlaPlex dupe formula which they have called PurePlex. It sounded promising, so I decided to research further.

The Knight and Wilson PurePlex range claims to colour your hair while protecting against damage and breakage. It rebuilds the natural structure of your hair, leaving it stronger, healthier, and more voluminous. Sounds perfect, right?

Disclaimer: This product was purchased by me and all opinions are my own and not sponsored by the company.


So What Is Knight and Wilson?

Knight and Wilson is a Superdrug exclusive brand that have already made their mark with a unique colour range that would entice any hair dye addict. Whether you're looking to make a statement with a vibrant colour or are just hoping to tame those pesky greys, there's something for everyone.

Their goal is to create salon-quality products for prices that suit everyone's budget so there's no need to worry about damage to your purse on this occasion. As if they couldn't get any better, they are also completely cruelty-free and suitable for vegans too.


Contents, Packaging, and Cost

All you packaging snobs out there will be pleased to know that despite the low price point of just £7.99, Knight and Wilson have taken care to create attractive packaging which looks both professional and expensive - a bargain in comparison to the real OlaPlex products.

Unlike the majority of dyes that come with three parts included (cream developer, colourant and a conditioning sachet), this dye comes with an added step, the bond reconstructing treatment. As well as this you have you are given instructions and gloves for safely applying the dye.


What Makes This Dye Different?

As mentioned above, this dye comes with an extra step in the hair colouring process which promises to reconstruct the hairs bonds, adding to the overall health and strength of your hair. Besides this, Knight and Wilson PurePlex dye is full of ingredients that are actually beneficial to your hair, such as Shea Butter and Argan Oil, which are included in the colouring formula and have amazing benefits to your hairs health.

Shea Butter, for example, is great for resolving scalp problems and is ideal for sensitive skin, while Argan Oil is rich in vitamin E which contains antioxidants to encourage hair growth.


Would You Try Knight and Wilson's Hair Dyes?

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Having very long, waist length and relatively thick hair, I decided that two dyes would probably be necessary. You can bet I was pleasantly surprised when I later discovered that the product rather generous with its contents, meaning I only ended up using one box of the boxes of dye!

After mixing the colourant and cream developer together, I applied the dye to my hair for the recommended time. While the consistency is easy to work with and doesn't clump together - or drip all over the floor like so many products do - it does smell like your standard chemical hair dye so, I would still recommend applying it in a well-ventilated area.

The only issue I did encounter was with the dye bottle itself, which strangely had three holes around the neck of the nozzle instead of just one main one on the end. This little surprise meant that some dye escaped onto the floor (no carpets thankfully so easy enough to clean) but it is something I will know to be cautious of for next time around.

After the processing time had passed, it was time for me to rinse out the dye and coat my hair in the bond reconstructing treatment for 15 minutes. This was by far my favourite part of the process, and it involves covering your hair in a lovely, thick and creamy conditioner-like product which smells strongly of bananas which is then rinsed out and followed up with conditioner.

The entire process was no more complex than any other hair dye that I have used in the past, and in total took just over an hour and a quarter to complete. It has left my hair feeling nourished and silky smooth and like I've just been to a hair salon.

Final Thoughts

While my hair colour didn't go exactly to plan (completely my own fault for not lightening my hair enough in the beginning and nothing to do with this dye at all), I am so impressed with how this dye has completely transformed the condition of my hair. Though my hair has never been in what would be classed as bad condition, it was previously a little lackluster and dry, especially at the ends. Now, it has a lovely shine and feels so healthy and strong.

This dye is definitely going to be my go-to colourant from now on, and I'm already looking forward to trying out more of their products in the future.

If you haven't already tried Knight and Wilson I strongly recommend that you do. Your hair will thank you!

When Dyeing Your Hair, What Colour Do You Go For?

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This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

Questions & Answers

  • Will Knight and Wilson pureplex hair dye cover greys?

    On the box it says it is intended to cover grey hairs as well, however I don't have experience with this myself so it would be a case of trying it out for yourself and seeing how things go.

  • Do I need to do a skin test before using Knight and Wilson Pureplex hair dye? Does it cause allergic reactions?

    All products reccomend that you conduct a patch test before completing a full application in case there is a reaction. I didn't have an allergic reaction to it whatsoever but that doesn't mean others won't.

© 2018 BunnyClaws


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    • profile image


      16 months ago

      I used lightest extra ash blonde and my hair has turned purple. Back to my old colour I’m afraid.

    • profile image


      21 months ago

      I used graphite grey on my hair and it didn't work can you please tell me why I did put it on blonde hair


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