Straightening and post-straightening kits designed for all hair types

Professional straightening at home: smooth, soft and shiny for up to 6 months.

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Straight hair

Hydrated hair

Long-lasting treatment

Easy to apply

Fast shipping

24–48h in Peninsula

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Free consultation

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Europe and the USA

Our best seller

Guaranteed results: if it doesn't straighten your hair, we'll give you your money back.

Intense hydration, shine , and softness that care for the hair fiber without damaging it . Ideal for natural, dyed, or bleached hair .
Straightening Kit | Keratin GoldenHair | without formaldehyde

Straightening Kit | Keratin GoldenHair | without formaldehyde

Say goodbye to frizz and hello to silky, healthy, and shiny hair. Our formaldehyde-free treatment combines deep hydration and long-lasting smoothing with gentle ingredients. Perfect for all hair types, even color-treated, bleached, or sensitive hair.

🧈 Shea butter : nourishment and softness

🥥 Coconut : hydration and shine

💧 Pro-Vitamin B5 : fiber care

Duration: up to 12 weeks

-20% off if you buy 2 kits of 500ml

Guaranteed results: if it doesn't straighten your hair, we'll give you your money back.
€79.98
€99.98
Straightening Kit | Keratin GoldenHair | without formaldehyde

Find your ideal straightening treatment

Hairdressing results at home, with professional and safe formulas

*99% of straightening failures are due to not using a titanium flat iron at 230°C or higher.

Buy with confidence: straight hair or your money back.

Up to 6 months of flawless hair

With post-straightening products, your hair stays protected, nourished and spectacular for longer

Real results

Before and after photos of clients who have already tried Gold DIAMOND. Visible smoothing, shine, and hydration.

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Why choose Gold DIAMOND

Formulas created to maintain smoothness, prevent frizz and nourish your hair as if you just left the salon.

Safe formulas

Formaldehyde-free, gentle on your hair and your health

Long-lasting effect

Keep your hair straight for up to 6 months

Deep hydration

Hydration

Intensive nutrition for strong, healthy hair

Happy customers

More than 1,000 women have already trusted Gold DIAMOND