REDKEN Acidic Color Gloss Heat Protection Treatment Leave-In Shine Spray (230°C) – 190ml

The essentials

If you’re trying to keep colour looking fresh while still using heat styling, this REDKEN Acidic Color Gloss leave-in spray is aimed at doing two jobs at once: helping protect hair when you reach for tools up to 230°C, and boosting shine for that “looks glossy, not greasy” finish.

The brand frames it around an “invisible protective layer” that works by sealing the cuticle (their Invisible Shield Technology). In plain terms, it’s the kind of treatment you’d use as part of your routine when colour fades faster than you’d like, and you want your hair to look smoother and more reflective after styling.

There’s also a claim that it can help colour care “level up” shine and support colour protection for up to 3-days, based on a consumer test using a full system. That’s helpful context, although it’s still worth remembering real results vary depending on how often you wash, your hair type and how hot you go.

What it’s for (and how you’ll use it)

This is a leave-in treatment, applied to damp hair. The idea is straightforward: after you’ve washed (and towel-dried), you spray it through, then carry on with your blow-dry or style. Because it’s a heat protection treatment, it’s designed for moments when your routine naturally includes heat.

A typical micro-routine might look like this: you wash, towel-dry so hair is damp (not dripping), mist the spray through your lengths and ends, comb through gently, then blow-dry. Once styled, the goal is a glossier look with your colour cared for underneath—rather than relying on heavy styling products that can make colour feel coated or dull.

Keep in mind that, as a shine spray/treatment, it’s not meant to replace your colour-protecting shampoo and conditioner. It’s more of a finishing step that supports your existing colour-care routine.

What stands out day to day

What matters most here is the balance: heat protection plus shine, without sounding like a styling product that leaves hair feeling waxy.

Heat protection up to 230°C

The product is positioned for heat protection up to 230°C. That makes it relevant if you regularly blow-dry, use hot tools, or style at fairly high temperatures.

Cuticle sealing concept

Invisible Shield Technology is described as sealing the cuticle with a protective layer. Whether you care about the science wording or not, the practical takeaway is that it’s designed to help protect colour and smooth how hair looks after styling.

Shine that lasts (on paper)

The “up to 3-days” claim is tied to a consumer test using the Acidic Color Gloss system. If you buy this on its own, it may still help, but you may not get the exact same duration unless you’re also using the matching system products.

The less convincing bits to consider

No treatment is magic, and this one has limits you should factor in: - Results depend on your full routine. The 3-days claim is based on testing with the full system, so if you don’t use the other products, the longevity may be more modest. - Heat protection isn’t the same as avoiding damage. It’s for protecting hair when you use heat, but you’ll still want to treat high temperatures with respect (especially for porous, bleached, or over-processed hair).

Also, if your main goal is ultra-strong repair or deep conditioning, you might find this is more of a colour-care + shine support rather than a full-on repair treatment.

Key things to check before buying

Before you add it to your basket, it’s worth thinking about your usage: - Is your styling routine heat-heavy? If you rarely use hot tools, you may not feel the benefit. - Do you want a leave-in mist rather than a cream/oil? This is a spray-style leave-in, which tends to suit people who prefer lighter application through the lengths. - Are you chasing colour longevity? The positioning is clear—colour protection and shine—so if that’s your priority, it makes sense.

Who it suits (and who should probably skip)

It suits you if you regularly blow-dry or use hot tools, you care about colour looking glossy rather than flat, and you want a leave-in step that’s easy to fit into your damp-hair routine.

It might not be the best match if you’re after heavy repair for severely damaged hair, or if you prefer not to use leave-ins at all. And if your heat is mostly low or occasional, there are simpler colour-care options you may not need this level of heat-focused protection for.

Final verdict

This REDKEN Acidic Color Gloss Heat Protection Treatment looks like a sensible buy for colour-conscious styling—especially if you’re comfortable spraying something through damp hair before heat.

It’s not perfect, but it’s well aligned with what it claims: heat protection up to 230°C, cuticle sealing (as described), and support for shine that can help colour look better for longer when used within the broader system.

If you’re the sort of person who wants colour to stay more reflective between washes and you style with heat often, it’s worth considering. If you’re mostly wash-and-go, or you’re seeking deep repair rather than shine and colour care, you may want to look at a more conditioning-focused option instead.

Quick FAQs

How do you apply it? Apply to damp hair as a leave-in, then style. The treatment is positioned for use before heat.

Is it only for coloured hair? It’s designed around colour protection and colour care, so it’s most relevant if your hair is coloured or you’re specifically trying to keep colour looking vibrant.

Does it replace other colour-care products? On the wording here, it’s a treatment step that supports your colour-care routine, not a full replacement for everything else.

Is the 230°C heat protection claim enough to rely on? It’s stated as heat protection up to 230°C, but you should still use sensible heat habits—protection helps, it doesn’t make damage impossible.

Buying verdict

Pick it if you want a practical leave-in spray that supports heat protection and a glassy, high-shine look for colour-treated hair, particularly when your routine involves hot styling. Consider skipping if you don’t use much heat, or if you’re looking primarily for intense repair rather than shine and colour care support.