Natural sant Onion Keratin DuoBox 120ml — 2-Step Smoothing Treatment for Dry, Damaged Hair, Frizz Control & Heat Protection

NATURAL SANT Onion Keratin DuoBox 120ml is a two-step keratin treatment system formulated with onion extract, biotin and rosemary to visibly smooth frizz, strengthen strands and provide thermal protection for dry, damaged hair.

This duo arrives as a compact 120ml kit designed for at-home or salon touchups that deliver smoother, more manageable hair without formaldehyde, parabens or added salt. The formula combines keratin protein with onion extract, rosemary and biotin to help temporarily align the hair cuticle and reduce unruly texture while adding shine. It’s intended as a cosmetic smoothing service rather than a medical treatment; results depend on hair type, application technique and aftercare.

How does the DuoBox improve hair texture and manage frizz?

The keratin base helps coat and smooth the hair shaft while botanical extracts provide support for stronger-looking strands. When applied and sealed correctly, the product reduces visible frizz and creates a sleeker surface that reflects light for added shine.

• Keratin protein helps temporarily smooth the cuticle for easier styling.
• Onion extract contributes antioxidants and a conditioning effect.
• Biotin and rosemary aim to strengthen and support hair resilience.
• Sealing with heat improves straightness and longevity.

What results can I expect and how long do they last?

Expect noticeably smoother, more polished hair after a complete application and heat sealing. Duration varies with hair porosity and care routine; many users see reduced frizz and maintained smoothness for several months when following recommended aftercare.

• Typical visible smoothing lasts weeks to months depending on hair and upkeep.
• Proper blow-drying and flat-ironing during application maximize effects.
• Avoiding clarifying shampoos and reducing washing frequency helps maintain results.
• Products are free from formaldehyde, parabens and added salt.

How should I use the Natural sant Onion Keratin DuoBox for best results?

Use the DuoBox following the included instructions and in a ventilated space. Key steps generally include cleansing with a clarifying wash, applying the keratin solution evenly, blow-drying to lock product into the strand, and sealing with a flat iron in small sections.

• Start with clean, towel-dried hair free of oils or heavy products.
• Apply the keratin mix evenly from roots to ends; comb through for distribution.
• Blow-dry fully, then flat-iron at recommended temperatures in thin sections.
• Allow the treated hair to rest per instructions before washing for best longevity.

Is this safe for colored or chemically treated hair?

The formula is designed without formaldehyde, parabens or salt, making it compatible with many color-treated and relaxed textures when used correctly. However, perform a strand test and consult a professional if hair is extremely fragile or recently processed.

• Strand testing helps confirm tolerance and desired outcome.
• Lower heat settings may be safer on compromised hair.
• Space treatments several weeks away from other chemical services when possible.
• If uncertain, seek a stylist’s advice before full application.

Who is this for: Natural sant Onion Keratin DuoBox 120ml is aimed at people with dry, frizz-prone or chemically treated hair who want a salon-style smoothing result at home or in a professional setting. It suits users seeking temporary straightening and surface repair with botanical support from onion, rosemary and biotin, and those who prefer formaldehyde-free cosmetic keratin options. If you need long-term medical treatment for scalp or hair disorders, consult a healthcare professional first.

Ingredients

Onion