Shampoos

Shampoo: The One Product Everyone Uses and Nobody Thinks About Enough

You've been washing your hair your entire life. Wet, lather, rinse, done. But here's the thing — the shampoo you use sets the tone for everything that follows. A gorgeous conditioner, a salon-grade hair treatment, an expensive serum — none of it can fully undo what a bad shampoo does in those first two minutes. It's the foundation of your whole hair care routine, and most people choose theirs based on whatever's on offer at the supermarket.

That's not necessarily wrong, by the way. There are perfectly decent supermarket shampoos. But understanding what makes a shampoo good or bad for your specific hair means you stop wasting money on products that don't deliver and start actually seeing results from the rest of your routine.

Sulphates: The Debate That Won't Die

Sodium lauryl sulphate and sodium laureth sulphate. Two ingredients that have been demonised so thoroughly you'd think they were radioactive. The truth? They're surfactants — cleaning agents that create lather and strip oil and dirt from your hair. They do their job extremely well. Too well, sometimes.

If your hair is thick, oily, and you use a lot of styling products, sulphates are fine. They'll cut through buildup efficiently and leave everything squeaky clean. But if your hair is dry, colour-treated, curly, or generally on the fragile side, sulphates can strip away too much of the natural oils your hair desperately needs. That tight, squeaky feeling after washing? That's not "clean" — that's your hair screaming for moisture.

Sulphate-free shampoos use milder surfactants — things like cocamidopropyl betaine or sodium cocoyl isethionate — that clean without being so aggressive. They don't lather as dramatically, which makes some people feel like they're not working. They are. Your hair just doesn't need a foam explosion to get clean.

How Often Should You Actually Wash Your Hair?

Every day? Twice a week? Once a week? The honest answer is: it depends, and anyone giving you a single universal number is oversimplifying things. Oily scalps might genuinely need daily washing. Dry, coily hair might thrive on once a week or even less. Most people with straight to wavy hair find every two to three days hits the sweet spot.

What you absolutely shouldn't do is push through greasy, uncomfortable hair just because someone on the internet told you to "train" your scalp. Your scalp produces sebum at the rate it produces it — you can't discipline oil glands into behaving. If your hair feels dirty, wash it. If it doesn't, don't. Revolutionary advice, that.

On the days in between, dry shampoo is your friend. Not a replacement for actual washing — think of it as a temporary fix, like deodorant for your hair. It absorbs excess oil and gives roots a bit of lift, but it doesn't clean anything. It just delays the inevitable.

Matching Your Shampoo to Your Hair

Volumising shampoos work by coating the hair shaft with lightweight polymers that add body without weight. Good for fine, flat hair. Terrible for thick hair that's already got plenty of volume and just needs smoothing.

Moisturising shampoos deposit hydrating ingredients while they clean. These are the workhorses for dry, damaged, or colour-treated hair. Look for shampoos with glycerin, aloe, or natural oils in the formula — but keep in mind that a shampoo's primary job is still to clean, so don't expect miracles from the washing stage alone. That's what conditioner and treatments are for.

Clarifying shampoos are the deep clean — the equivalent of a kitchen degreaser for your hair. Use them once a week, maybe once a fortnight, to strip away product buildup, mineral deposits from hard water, and that weird film that chlorine leaves behind. Don't use them daily. They're too aggressive for everyday use and will leave your hair drier than the Sahara.

Anti-dandruff shampoos contain active ingredients like zinc pyrithione, ketoconazole, or salicylic acid that target the fungus or scalp conditions causing flaking. They're medicated products, essentially, so they work differently from cosmetic shampoos. If over-the-counter options aren't cutting it after a month, that's a conversation for your GP — not a reason to buy a stronger formula.

A Few Practical Pointers

You don't need a palmful. A blob the size of a ten-pence coin is enough for most hair lengths. Concentrate the shampoo on your scalp, not your lengths — the sudsy water running down will clean the rest. This single habit change can make a noticeable difference to dryness and frizz within a couple of weeks.

Water temperature matters more than you'd think. Hot water opens the cuticle and strips moisture. Lukewarm is ideal for washing; a cool rinse at the end smooths the cuticle back down and adds shine. Nobody loves a cold rinse in January, but your hair absolutely does.

Compare shampoos from top brands right here — whether you're after a gentle daily cleanser or a powerhouse clarifier — and check our deals for savings on salon-quality formulas you'd normally pay twice the price for.