Looking for a hair straightening solution that combines effectiveness, hair care, and ease of use? The First by Sweet Professional is a new range on the straightening market, featuring a formula based on organic acids. This formaldehyde-free straightening treatment is designed to meet the needs of all hair types.
What is The First by Sweet Professional?
The First is an innovative approach for your hair. Founded in 2011 by Paulo Kazaks, Sweet Professional introduced biotechnology to hair care. The First is a thermal straightening system in the form of a shampoo , composed of a blend of 5 organic acids. This technology transforms the hair structure by interacting with proteins and heat, providing temporary straightening of the hair fiber.
The advantages of The First
- Fast and effective straightening : The First is known for its quick straightening process, in just 15 minutes. It allows for optimized work in the salon and thus increased profitability.
- Innovative formula : Its irreplaceable formula, based on a blend of 5 organic acids, offers effective straightening while respecting the nature of the hair.
- Safety and compatibility : The First is glyoxylic acid-free, odorless, fume-free, and compatible with several chemical products.
- Dermo-cosmetic ingredients : The active ingredients are the same as those used in dermo-cosmetic products. They are suitable for hair care and beautification.
- Long-lasting results : The straightening lasts 3-4 months, and at-home care helps prolong its duration.
- Derived from nature : Sweet Professional uses active ingredients from nature and treats the water used to prevent pollution.
The 5 organic acids of The First
- Alpha-lipoic acid : Stimulates the immune system and acts deeply on the hair structure.
- Salicylic acid : Prevents fungal and bacterial contamination thanks to its keratolytic and antimicrobial properties.
- Glycolic acid : Facilitates the penetration of substances and increases the absorption of other active ingredients.
- Hyaluronic acid : Preserves hair elasticity, fills in damage, and provides a smoothing effect.
- Lactic acid : Relaxing and softening for the hair fiber, it restores hair strength and elasticity by modifying the ionic charge of its molecules and improves nutrient absorption.
The First product range
The First Straightening Shampoo
Straightening shampoo combined with iron straightening.

The First HOME CARE Shampoo
Daily cleansing shampoo to maintain straightening. It does not damage the hair fiber and leaves hair soft and hydrated.

The First HOME CARE Conditioner
Conditioner for all types of thermally straightened hair. Repairs cuticle and cortex damage, thanks to shea butter which provides softness, nourishment, and shine.

How to use The First?
Step 1
- Perform two clarifying shampoos to open the hair cuticles.
- After the first shampoo, thoroughly wring out the towel to remove all water from the hair.
- Rub carefully without diluting the shampoo then leave on for 3 minutes.
- Completely dry the hair with a hair dryer .
Step 2
- Pour 50ml of straightening shampoo into a bowl.
- Apply this treatment to the hair with your fingers, working in 3 cm sections.
- Start with the lengths, working the product in well, then finish with the roots by massaging them.
- Once the product is applied to all the hair, massage the scalp.
- Leave the product on for 15 minutes without a heat source, holding it in place with a clip .
Step 3
- After 15 minutes, rinse thoroughly with clear water.
- Apply The First conditioner to the lengths and ends to rehydrate the hair.
- Leave on for 3 minutes then rinse thoroughly.
- Completely dry the hair with a hair dryer.
Step 4
- Divide the hair into 3 sections: ear-crown, crown-ear, and front-crown.
- Start at the nape and, in 2 cm sections, pass the straightener at 230°C over each strand, 7 passes per strand.
- Avoid straightening the ends if they are sensitized.
- After straightening all the hair, lower the straightener temperature to 200°C and straighten the ends, 7 passes per strand.
- If the ends are very sensitized, reduce the temperature to 190°C.
Recurring question about The First
What is The First straightening? The First is a thermal straightening system in the form of a shampoo, composed of organic acids that modify the hair structure through heat.
What are the advantages of The First straightening? The First straightening is fast, formaldehyde-free, and offers long-lasting results.
How long does the straightening last? It lasts between 3 and 4 months. Using at-home care helps prolong this duration.
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