LEIGH CAMPBELL: 'There's a reason I always use supermarket shampoo.'

Recently, Mamamia's beauty editor Erin interviewed a trichologist (sort of like a hair and scalp doctor) to ask the age-old question… is salon shampoo better for our hair than supermarket shampoo? And I have never clicked so fast on a link in my life. 

For 20 years — as long as I've been a beauty journalist — I've been a big advocate for supermarket (AKA affordable) shampoo and conditioner.

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I'm of the opinion that it's impossible to lump entire retailers, or price brackets, into a black-and-white category of 'good' and 'bad'. Oftentimes we're made to feel like salon products are pricey because they are better, and supermarket ones are bad because they're cheap.

This theory rarely rings true for anything else, so why would it be true for haircare? Sure, 'you get what you pay for' applies in situations like second-hand cars and fancy hotel rooms, but with fashion and beauty, it's different.

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You can pay $300 for a designer knit that balls and pills after a few wears, yet a $50 one from Uniqlo still looks brand new a year later.

Skincare is a good example, too. There are incredible serums and moisturisers available that definitely fall in the 'Savey' category — it all comes down to formulation and distribution — if a brand makes big volumes of a product, it can be made at a much more affordable price.

Each brand will differ, regardless of the price point. There are so many factors at play, so I never judge a book by its cover. Or in this instance, a shampoo by its RRP.

Want to find out some of the best supermarket shampoos? We asked four hairdressers which supermarket shampoos and conditioners they actually use.

What do you think of supermarket shampoo? Are you a fan? Share your thoughts with us in the comment section below.

Feature image: Instagram/@leighacampbell.