(STEP 1 shampoo also available in our store)

Among all the tannin smoothing treatments available on the professional market, L'Iéna Paris's La Genèse™ Tannin Smoothing holds a special place. It's not just another tannin smoothing treatment—it's an exceptional formula, born from extensive research and development, combining the power of patented Enzymoplastie® Tannin Smoothing with a 100% plant-based composition to offer one of the most nourishing, respectful, and complete smoothing treatments available in professional salons. Vegan, formaldehyde-free, paraben-free, and sulfate-free, it represents the pinnacle of ethical and performance-driven hair smoothing.

Enzymoplastie® — a unique Tannin Smoothing technology patented by L'Iéna Paris

This is the major innovation that sets La Genèse™ apart from all other tannin smoothing treatments. Enzymoplastie® is an exclusive technology developed and patented by L'Iéna Paris, which uses enzymes as catalysts for the smoothing process. Enzymes have a remarkable property: they allow for ultra-deep penetration into the hair fiber, far beyond what a classic smoothing product can achieve. By infiltrating the very core of the hair's internal structure, they repair deeply without suffocating or weighing down the fiber, and give it incomparable suppleness, shine, and lightness. Tannin Smoothing

It is this depth of penetration that explains why La Genèse™ Tannin Smoothing is described as one of the most nourishing and moisturizing smoothing treatments available, even on the most damaged or sensitized hair.

100% plant-based active ingredients — a vegan and ethical Tannin Smoothing treatment

La Genèse™ Tannin Smoothing is one of the few professional smoothing treatments that can claim a composition of 100% plant-based active ingredients, without any animal-derived ingredients. This rare vegan positioning in the world of professional smoothing makes La Genèse™ a choice perfectly aligned with the values of professionals and clients committed to a more conscious and respectful consumption approach.

Key ingredients of Tannin Smoothing and its benefits

• Tannin Enzyme (patented Enzymoplastie®): Tannin enzymes act as catalysts to restructure the hair's protein chain and give it the desired shape. They penetrate deeply for a natural and long-lasting smoothing result, without damaging the fiber.
• Plant-based Pro-Keratin: Keratin of exclusively plant origin that provides strength, volume, and shine to the hair. While limiting the brassy appearance of highlighted, colored, or bleached hair — a major asset for clients with chemically treated hair.
• Blue pigment: Integrated into the formula to prevent any color alteration and prevent hair from becoming brassy after smoothing — an additional protection that few tannin smoothing treatments offer.
• Buriti Oil (the Brazilian "Tree of Life"): Rich in carotenoids and vitamin E, it prevents dehydration of the scalp and lengths. Particularly recommended for dry or colored hair.
• Coconut Oil: A beauty secret of Brazilian women for generations, it revitalizes, shines, thickens, and protects each strand.
• Macadamia Oil: Very rich in lipids, it promotes hair growth and prevents dryness of the scalp and skin.
• Açaí: One of the richest antioxidant fruits in the world. It rejuvenates the hair fiber, provides softness and suppleness, and protects against external aggressions with regular use.

A gentle and intelligent Tannin Smoothing — that adapts to every hair type

One of the great features of La Genèse™ is its adaptable and intelligent smoothing effect. Unlike smoothing treatments that impose a uniform straight result regardless of hair type, La Genèse™ naturally adapts to the structure of each hair:

• For fine hair: the smoothing will be complete — a perfectly smooth and disciplined result.
• For frizzy or curly hair: the hair will retain a natural and supple wave, for a result that respects the nature of the hair while disciplining it and adding shine and softness.

This gentle approach provides a natural and non-plasticized result that preserves hair movement and vitality — a philosophy that perfectly matches the new expectations of clients seeking a healthy rather than aggressive smoothing treatment.

A high-end Tannin Smoothing suitable for the most fragile hair

La Genèse™ is one of the few tannin smoothing treatments recommended even for highlighted, bleached, and very sensitized hair — hair that most other smoothing treatments cannot treat without risk. It is precisely thanks to its gentle formula, non-aggressive enzymatic action, and richness in nourishing and moisturizing active ingredients that it can be used safely on the most fragile fibers.

What type of hair is this Tannin Smoothing for?

• All hair types — fine, medium, thick, curly, frizzy
• Highlighted, colored, or bleached hair ✅ — integrated blue anti-brass pigment
• Very sensitized or damaged hair from repeated chemical treatments ✅
• Dry hair requiring hydration and deep care
• Vegan clients or those sensitive to aggressive chemical compositions ✅

Highlights of La Genèse™ Tannin Smoothing 1L

• Patented Enzymoplastie® — exclusive L'Iéna Paris technology
• 100% plant-based active ingredients — entirely vegan formula
• Formaldehyde-free, paraben-free, sulfate-free
• Integrated blue anti-brass pigment — protects and preserves the shade of colored or highlighted hair
• Smooths up to 100% while maintaining suppleness and natural movement
• One of the most nourishing and moisturizing smoothing treatments on the professional market
• Compatible with highlighted, bleached, and very sensitized hair
• Modulable result depending on hair type — fine or frizzy
• Professional 1L format — many applications

Enzymoplasty Tannin Smoothing application protocol

1. Mandatory strand test: Before any use, it is imperative to perform a strand test to assess hair resistance. Stop immediately if hair breaks easily or appears completely elastic.
2. Shampoo: Wash hair with L'Iéna Paris's La Genèse™ N°1 preparatory shampoo (available on Paris Liss). This plant-based shampoo is more suitable for protein smoothing treatments than a classic clarifying shampoo. An ordinary shampoo can also be used.
3. Drying: Completely dry the hair.
4. Application: Shake the bottle before use. Apply La Genèse™ strand by strand over the entire length, avoiding touching the scalp. Use a fine-tooth comb to ensure the product is evenly distributed.
5. Processing time: Leave on for 30 to 60 minutes depending on hair type, preferably under cellophane or a cap.
6. Rinsing: Rinse out 90% of the product — do not shampoo again.
7. Blow-drying: Carefully blow-dry the hair very straight to activate shine and begin sealing the cuticles.
8. Smoothing: Pass the flat iron over very fine strands (0.5 cm thick), 10 to 20 passes per strand depending on the resistance of the hair fiber.
9. Finishing: Apply La Genèse™ N°3 Therapy Mask or Sapphire Elixir (anti-yellowing) or Topaz Elixir (moisturizing) as needed. Style with Nebuleuse thermoprotective mist then Scintillance mist for final shine.

Recommended Tannin Smoothing temperatures:

• Bleached and sensitized hair: 180 to 200 °C
• Colored, normal, and resistant hair: 210 to 250 °C

💡 For very sensitized hair, it is recommended to add a few pumps of Topaz Elixir to the product before application to enhance hydration.

💡 La Genèse™ is a "One Step" smoothing treatment — it does not necessarily require a clarifying shampoo before application, making it more respectful of the hair fiber.

❓ FAQ — Frequently Asked Questions about Tannin Smoothing

What is the difference between La Genèse™ and other tannin smoothing treatments like Salvatore Blue Gold or Minoa Gloss? La Genèse™ stands out with three unique elements: patented Enzymoplastie® (enzymes that penetrate deeper than tannins alone), a 100% plant-based and vegan composition, and an integrated blue anti-brass pigment. It is the most nourishing tannin smoothing treatment and the most compatible with very sensitized or highlighted hair. It offers a softer and more adaptable result than some more aggressive tannin smoothing treatments.

Can La Genèse™ be used on very bleached hair? Yes, that is one of its great advantages. Its gentle formula, non-aggressive Enzymoplastie®, and richness in nourishing active ingredients make it compatible with highlighted, bleached, or very sensitized hair — where other smoothing treatments would be contraindicated. Adjust the flat iron temperature (maximum 180°C on very sensitized hair).

Is a clarifying shampoo needed before La Genèse™? No, La Genèse™ is a "One Step" smoothing treatment that does not necessarily require a clarifying shampoo. L'Iéna Paris's La Genèse™ N°1 preparatory shampoo, composed of 100% plant-based active ingredients, is recommended because it is better suited for protein smoothing treatments than a classic clarifying shampoo, which can over-aggress the fiber before treatment.

Why is it not listed as compatible with pregnancy? Although the formula is 100% plant-based and formaldehyde-free, L'Iéna Paris recommends consulting a doctor before any use by pregnant or breastfeeding women — as a precaution, as with all hair treatments.

How many applications can be done with the 1L format? The professional 1L format allows for approximately 10 to 15 applications depending on the length and thickness of the treated hair.

Is La Genèse™ truly 100% vegan? Yes, the formula contains 100% plant-based active ingredients without any animal-derived ingredients — a rarity in the world of professional smoothing. The Pro-Keratin used is exclusively of plant origin, unlike the vast majority of keratin smoothing treatments that use animal keratin.