Yes. Paris Liss assists technicians and professionals in choosing products according to their clientele and specific needs.

Yes:

• Wear gloves
• Work in a ventilated area
• Avoid contact with the scalp
• Never apply to an irritated scalp

Always perform a strand test

The products are primarily intended for professionals. Incorrect application (temperature, dosage, rinsing) can alter the result. For personal use, training or good technical proficiency is strongly recommended.

To prolong the results, it is essential to use:

• a sulfate-free shampoo
• a nourishing mask
• a heat-protective serum

👉 Paris Liss offers products compatible with professional straightening in the CRYSTAL CARE range

The temperature depends on hair type:

• Fine / sensitive hair: 180–200 °C
• Normal hair: 210–220 °C
• Thick / afro hair: 220–230 °C

👉 Too high a temperature can weaken the hair fiber.

No. Most protocols recommend a partial rinse (around 50 to 60%) to preserve the active ingredients necessary for thermal straightening. Each Paris Liss product sheet specifies the exact protocol.

On average:

• 12 to 15 applications in salon
  
  (depending on length, thickness and quantity used)

👉 The 1 L formats are designed for excellent professional yield.

Yes, provided you adjust:

• the processing time
• the iron temperature
• the number of passes

A precise diagnosis and a strand test are essential for highlighted or bleached hair.

The choice depends on three essential criteria:

• Texture (fine, thick, afro, wavy)
• Chemical history (coloring, bleaching, old straightening)
• Objective (tame, strong straightening, reduce volume)

👉 Paris Liss offers several types of straighteners:• nutritive/protein straighteners for sensitized hair• more powerful straighteners for resistant and voluminous hair

No, all our products are free of formaldehyde and formaldehyde derivatives.

The mattifier is used to correct and neutralize yellowish highlights, corrects yellow and orange tones, increases shine and softness, is a perfect complement for hair straightening and botox, acts as a toner, neutralizes yellow and orange highlights. Some straightening treatments contain it in their formula.

Hair botox is first and foremost a treatment. Its role is to treat the hair, not to straighten it. It is the ideal treatment for dry hair damaged by chemical treatments such as coloring, bleaching, etc.
It is a real youth cure for brittle hair.
In addition, Hair Botox disciplines unruly hair by taming frizz, it slightly relaxes the hair and thus facilitates blow-drying. -Hair botox should be used as a treatment, results may not be visible after the 1st application.
Some hair botox products can be used to define the curl of curly hair.
Hair botox treatment lasts between 4 and 6 weeks.
❗All our hair botox treatments are guaranteed formaldehyde-free
PARILISS ADVICE: For amazing results: combine hair botox with SOS Shot concentrated hair botox ampoules and Bioplex and finish with a dab of Keraboost for an ultra glossy effect.
Protocol

! Hair botox is a treatment, not a straightening product, we are not looking to straighten but to TREAT,
Do not work it like a straightening product: do not overheat or make too many passes, max 4/5 passes and no more than 200°

STEP 1 - After a hair and scalp diagnosis, wash hair twice with a clarifying shampoo and then dry to 50%.
STEP 2 - Apply hair botox to lengths and ends, avoiding the root, starting 2/3cm from the scalp, then leave on for 30 minutes to 1 hour.
STEP 3 - After the processing time, rinse 100% with water, if possible apply the SOS Shot, leave on for 10 minutes then rinse and blow-dry to 100%.
STEP 4 - Finally, flat iron 4/5 times on each strand at 180 degrees (210 degrees for difficult hair). For curly hair, dry with a diffuser to avoid relaxing the curl.

• Straightening: Tahiti Gloss or Elyssa Amla Plex, Enzymoplasty La Genèse de l'Iéna Paris
• Treatments: Kéraboost to define curls as well as all treatments from our shop

Understand, repair, enhance

Damaged, sensitized, or bleached hair is weakened hair.
Its fiber is more porous, more brittle, and its elasticity can be altered. In this state, it is essential to prioritize repair before any chemical transformation.

This is why it is generally not recommended to perform a straightening treatment on very damaged or bleached hair without prior preparation.
The priority should always be to rebuild the hair fiber, restore its resistance, and reduce its porosity.

→ When the hair is slightly sensitized but not elastic, I recommend a gentle straightening treatment that will relax it while respecting the fiber:

1. Excellence French straightening
or
2. L'Iéna Paris enzymotherapy (improved tannin straightening)
I recommend applying Bioplex just before straightening, without rinsing it out, then applying the straightening product over it and following the straightening protocol.
Clarifying shampoo is not recommended for this type of hair, as the hair is already porous. Your protocol must be adapted to the hair's condition.
3. Elyssa amla plex straightening

As each hair is unique, protocols can be adapted according to:
the level of sensitization
chemical history
natural texture
the desired result
These tips do not replace training

Which straightening treatment and how to use it
Thick, healthy, and natural hair is often considered "difficult" hair.
Its cuticles are very tight, making product penetration more complex and slowing down the action of hair treatments.
To achieve 100% straightness, it is therefore necessary to use suitable straightening products, powerful enough to penetrate deep into the hair fiber and allow for the desired transformation.
However, this type of product is not recommended for sensitized or damaged hair, as their power can further weaken the fiber instead of disciplining it.
That's why I advise always working with two straightening treatments: a powerful straightening treatment for difficult hair and a milder one for sensitized hair.
Recommended straightening treatments for thick and resistant hair
For this type of hair, I particularly recommend:
Indian Gloss straightening treatment
Tahiti Gloss straightening treatment
Vitta Gold straightening treatment
Minoa Gloss straightening treatment
Panthera Negra straightening treatment

The importance of technique
On resistant hair, the result primarily depends on your technique and expertise.
This type of hair does not always take perfectly on the first try, and it's not the product's fault: you therefore need to adjust the protocol to optimize the result.
Depending on the case, it may be necessary to:
extend the processing time
adjust the number of flat iron passes (without excess to avoid weakening)
rinse to 80% instead of 100%
Perform a strand test to verify your protocol
use a shampoo (L'Iéna Paris clarifying shampoo compatible with all straightening treatments and all brands)
Each hair reacts differently, so observation and adaptation are essential.

Training and support
These tips are for informational purposes only and do not replace professional training.
If you feel hesitant, lack information, or wish to improve your results, do not hesitate to contact me via WhatsApp for a refresher or advanced training.

All the treatments offered in our online store are compatible with damaged, fragile, bleached, or sensitized hair.
They can be used alone, but I recommend combining them to create personalized repair protocols and achieve results from the first application.

Example of a protocol for damaged hair:
1️⃣ Bioplex as a preventive measure
Spray with the Nano Gun or directly with its spray on washed and towel-dried hair.
Leave on for 10 minutes.
➡️ Do not rinse.

2️⃣ Apply the Repairing Botox Treatment (any brand: Minoa, GlowLift, etc.) over the Bioplex, to the lengths and ends without touching the roots.
Leave on for 30 minutes.
Then rinse.

3️⃣ Concentrated Botox Ampoule
Mix 1 dose of product with 2 doses of water.
Apply to the most sensitized areas.
Leave on for 10 to 15 minutes.
Then rinse.

4️⃣ Spray Bioplex again without rinsing.
Dry and then style:
straighteners or diffuser for curly hair

5 / Finishing protection and shine
Apply the Silk Bath Serum to the lengths and ends, for a shiny, light, and fragrant effect.

OUR APPROACH:
Our objective is simple:
repair before transforming
protect before straightening
preserve hair health in the long term

Since each hair is unique, protocols can be adapted according to:
the level of sensitization
the chemical history
the natural texture
the desired result
These tips do not replace training

Afro or textured hair is both resilient and fragile.
Its spiral structure makes it naturally drier, more porous, and more prone to breakage. It is therefore delicate hair to straighten, requiring a thoughtful strategy and perfect mastery of the protocol.

The 3 possible approaches for straightening afro hair

1. Light straightening to preserve the hair's natural texture
This is, in my opinion, the safest option.
It softens the hair fiber without denaturing it, while avoiding overly noticeable and difficult-to-manage regrowth between two straightening sessions.

2. Gradual straightening
This approach involves working on the hair in several stages, over several sessions if necessary, to achieve a smoother result without weakening the fiber.
It is an ideal method for preserving hair health in the long term.

3. Aim for intense straightness from the first session
This option is possible but riskier.
The necessary protocol is often more aggressive for this type of fiber, which can lead to breakage in the following weeks or months if the hair is not sufficiently protected and reconstructed.

Recommended straightening treatments for afro hair

For textured hair, I particularly recommend:

Tahiti Gloss: ideal for afro hair thanks to its shea-rich base, which is very nourishing and protective for this type of fiber

Minoa Gloss (tannin)

Enzymoplasty with improved tannin

BioTanix Tannin

These straightening treatments help to discipline the hair fiber while respecting its need for nutrition and reconstruction.

Professional tip to limit breakage after straightening

A small piece of advice I give my trainees:
The use of Minoa PH Control neutralizer is highly recommended after straightening textured hair.

The neutralizer helps to:

re-bond disulfide bonds altered during straightening

stabilize hair transformation

reconstruct the fiber from within

strengthen the hair and limit breakage in the following weeks

It is, in my opinion, essential for dry, textured, or afro hair.

Training and support

These tips do not replace professional training.
If you wish to train, improve your skills, or secure your protocols on textured hair, do not hesitate to contact me via WhatsApp and follow me on Instagram for more professional advice.

• Smoothers: All smoothers containing matifying agents
• Treatments: All treatments containing matifying agents