Le Prö Organic Single Pass Smoothing Hair Mask – 33.8 fl oz (1 L)
Discover salon-grade smoothness in a single step with Le Prö Organic Single Pass, a beloved Brazilian hair realignment mask created to tame frizz, reduce volume and leave strands aligned, glossy and visibly healthier. Born in Brazil — home of the world's most coveted smooth, luminous hair — this formaldehyde-free formula brings professional results into an elegant, easy ritual.
Powered by naturally derived, plant-based actives, it nourishes the fiber from the inside out, working on every hair curvature without harsh chemicals so your hair feels softer, lighter and beautifully disciplined.
Key Benefits
- Aligns and harmonizes the hair, reducing volume and frizz
- Rich in proteins and vitamins to help rebuild the hair fiber
- Intense shine and a naturally smooth, longer-lasting finish
- Formaldehyde-free, single-step application
- Enriched with plant-based vitamins and amino acids
- Suitable for chemically treated and colored hair when fully rinsed
- Gentle on the scalp — no flaking, no stinging eyes
Ingredients
Quinoa Protein – replenishes key vitamins and minerals to help restructure the fiber.
Keratin – nourishes and hydrates strands while supporting strength.
Wheat Protein – a repairing, hydro-regulating agent that restores natural flexibility.
Macadamia Oil – replenishes omega 6 and 9 for stronger, healthier-looking hair.
Full ingredient list (INCI): Aqua, Cetearyl Alcohol, Propylene, Glycol, Pyrogallol, Cetrimonium Chloride, Alcohol, Cyclopentasiloxane, Parfum, Ceteareth-20, Hydrolyzed Rice Bran Protein, Macadamia Ternifolia Seed Oil, Hydrolyzed Quinoa, Behentrimonium Methosulfate, Hydrolyzed Keratin, D-Limonene, Glycerin, Lactic Acid, Hexyl Cinnamal, Linalool, Hydrolyzed Corn Protein, Phenoxyethanol, Hydrolyzed Wheat Protein, Hydrolyzed Soy Protein, Potassium Sorbate, DMDM Hydantoin, Methylchloroisothiazolinone, Disodium EDTA, Methylisothiazolinone.
About Le Prö Cosmetics
Le Prö Cosmetics is a Brazilian haircare brand specializing in hair realignment and recovery, developing organic-inspired formulas with natural, plant-based elements. The brand is based in Piratininga, São Paulo, Brazil, and is known for its single-step smoothing masks.
How to Use
- Wash hair with a Le Prö Hidrate Repair shampoo, working a rich lather from roots to ends.
- Rinse thoroughly with running water, removing all product.
- Pour about 85 ml into a bowl (adjust to hair length and volume).
- Starting at the nape, apply in thin sections from the root (keeping 1 cm from the scalp) using a brush, then comb through to the ends.
- Leave on for 40 to 60 minutes depending on hair thickness and porosity.
- Tip: warm the product on the hair with a blow-dryer, let cool, then continue.
- Rinse out 90–100% of the product with water only and blow-dry completely.
- Flat-iron thin sections about 15 times each at up to 230°C.
Caution: For professional use. Always perform a strand test before any chemical procedure. Do not use on children, pregnant or nursing women without medical guidance. Avoid contact with eyes; external use only. Incompatible with ammonium thioglycolate, sodium hydroxide, guanidine and henna.
From the heart of Brazil's celebrated beauty culture, this is the silky, mirror-shine finish that Brazilian salons are famous for.
Explore more in our Brazilian hair care collection to build your complete smoothing routine.
Bring home authentic Brazilian smoothing — add Le Prö Organic Single Pass to your cart today.
Frequently Asked Questions
How do I use Le Prö Organic Single Pass?
Wash hair with a clarifying-free shampoo, rinse, towel-dry, then apply the mask in thin sections from root (keeping about 1 cm from the scalp) to ends. Leave on for 40–60 minutes, rinse with water only, blow-dry fully, and flat-iron thin sections at up to 230°C. Always perform a strand test first.
Is this an authentic, original Le Prö product?
Yes. This is a 100% genuine Le Prö Cosmetics formula imported from Brazil, sold in its original professional packaging.
What about shipping and returns?
We ship worldwide. Orders are dispatched promptly with tracking, and returns follow our standard store policy — see checkout for details.
Is it suitable for my hair type?
It is designed for all hair curvatures, including colored and chemically treated hair, and even blonde hair. It is for professional use; pregnant or nursing users should consult a doctor first.
How long do results last?
The smoothing, aligned effect lasts on average 90 to 120 days, varying with hair growth and home maintenance.
⚠️ The product label may contain additional or different information than stated on the website. Always read labels, warnings, and usage instructions before using or consuming.
Packaging Note: This product features new updated packaging, but depending on stock availability, you may receive the previous version. The formula may vary and quality remain the same.