Yuko Permanent Hair Straightening - FAQ

Yuko is a chemical process that alters the keratin bonds in the hair to create a permanently straight structure.

It takes between 3–6 hours, depending on your hair type, length, and thickness.

Hair treated with Yuko remains straight almost permanently. However, new growth will appear in its natural texture. I recommend Yuko touch-ups every 6–12 months, depending on your hair’s growth and texture. Brazilian Blow Dry touch-ups are also recommended for regrowth to avoid over-processing with chemicals.

You can wash your hair 2–3 days after the treatment. Blow-dry it in a downward direction to maintain smoothness and shine.

A chemical solution breaks down the hair’s protein bonds. After rinsing, a protein-based pre-treatment fills in any gaps, and a flat iron is applied to reshape the hair permanently. A neutraliser then locks in the new straight structure.

Yes — if carried out by a qualified professional. There are no fumes, only the mild scent of the chemicals used.

As with any chemical straightening process, correct application is key to achieving the best results. Depending on your hair’s natural texture, minor breakage can occur due to the weakened structure caused by the treatment.

No, it’s not suitable for afro-textured hair. Yuko achieves the best results on virgin or minimally processed hair. I strongly advise against Yuko on bleached, highlighted, or over-processed coloured hair — a Brazilian Blow Dry is a safer choice in such cases.

No — colour your hair at least two weeks before or after Yuko. Doing both treatments too close together may cause damage.

If the previous treatment used the same chemical base (Ammonium Thioglycolate), Yuko can usually be applied safely. However, if your hair is badly damaged or the prior treatment was poorly executed, Yuko may not fully take effect.

If you’ve had an afro relaxer, it must be completely grown out before having Yuko. If you’ve had a Brazilian Blow Dry with me, Yuko can be applied safely. However, not all keratin-based treatments are compatible with Yuko.

Yes, I recommend using a sulphate-free shampoo, a nourishing conditioner, and an occasional hair mask to keep your hair hydrated and prolong the smoothness. I’ll advise you on the best options for your hair type.

Yuko permanently restructures the internal bonds of the hair, while Brazilian Blow Dry temporarily coats it with proteins for a smoothing effect. The Brazilian lasts 3–5 months, while Yuko’s results are permanent on the treated hair.

Because the application process requires precision and professional timing, I strongly recommend having it performed in a salon.