Redken Acidic Color Gloss Shampoo (sulphate-free) for colour-treated hair

The essentials

If you’ve coloured your hair, you already know the annoying part: colour can fade faster than you’d like, especially when you wash often. Redken Acidic Color Gloss Shampoo is designed for colour-treated hair and is positioned as a gentle cleanse that helps protect your shade while adding a glossy look. It’s sulphate-free, so the promise here is less harshness and a smoother feel through the lengths.

The “glass-like shine” angle is the headline, and it’s also linked to up to 3-days in a consumer test when used as part of the full system. On its own it’s still a shampoo—so the results you’ll notice will depend quite a bit on your routine and hair type, but the concept is clear: keep the wash gentle, help slow colour fade, and keep hair looking polished.

What it’s for (and what it’s not)

This shampoo is for you if your main goal is colour protection without jumping to heavy, stripping cleansers. The formula is described as providing a gentle-lather that smooths strands from root to tip. That matters if your hair tends to feel rough after washing, or if your colour already looks a bit dull between salon visits.

It may not suit you if you’re expecting a deep “clarifying” clean or a dramatic reset of product build-up. Sulphate-free shampoos can feel less aggressive for some people, and if your scalp needs something more cleansing, you might find this sits more in the colour-care lane than the “heavy duty” lane.

Key takeaways on results

The base description focuses on three practical outcomes: gentle cleansing, smoother hair, and helping prevent colour fade. There’s also an idea of shine staying noticeable for a few days when you follow the wider system.

Worth noting that the “up to 3-days” claim is tied to using the complete Acidic Color Gloss regimen. So if you only buy the shampoo and skip the rest of the routine, you may not get the full effect described—still, you can absolutely use it as a daily or frequent wash option for colour maintenance.

How it fits into a colour-care routine

Using it as intended is straightforward. Apply to wet hair, lather, and rinse. The routine angle matters here: the product description specifically suggests using Acidic Color Gloss as a complete regimen.

A realistic way to picture it: you wash after work, rinse thoroughly, then towel-dry gently. If your hair is prone to looking flat or slightly dry after washing, the smoother finish described can make styling easier and help your colour look fresher for longer. It’s not magic, but it’s the kind of everyday shampoo that makes colour care feel less like extra work.

Things to double-check before you buy

Before choosing this, consider what “clean” means for you. If your hair is regularly weighed down by styling products, you might need an occasional stronger cleanse elsewhere, because the description doesn’t position this as a deep clarifier.

Also, confirm your hair is truly colour-treated and that you’re chasing protection and shine, not volume or curl definition. Sulphate-free formulas often feel more conditioned, which can be great for maintaining gloss, but it’s not always what people want if they’re very sensitive to flatter hair.

FAQs

Does this shampoo help prevent colour fade?

The description states that the sulphate-free formula helps prevent colour fade, alongside smoothing the hair from root to tip.

Is it good for frequent washing?

It’s designed as a gentle cleanse with a gentle lather, so it’s the kind of shampoo that can suit regular use on colour-treated hair—though your scalp needs still come first.

Will I get the “3-days” shine if I only use this shampoo?

The 3-days claim is described as coming from a consumer test using the full system/regimen. With only the shampoo, results may be more subtle.

Is it sulphate-free?

Yes—the description explicitly calls out a sulphate-free formula.

How do I use it?

Apply to wet hair, lather, then rinse.

Should you buy it?

It’s worth buying if you want a colour-care shampoo that leans gentle (sulphate-free), smooths hair while washing, and is aimed at keeping colour looking fresher with a glossy finish. It suits people who wash regularly and prefer a softer, more conditioned feel rather than a stripping clean.

You may want to skip it if you need a clarifying shampoo for heavy build-up or if your main goal is something other than colour protection and shine. It’s also better to think of it as part of a regimen if you’re specifically chasing the “up to 3-days” shine claim—otherwise, you might find it delivers more modest, day-to-day benefits.