Advice
Keratin hair products: Which one is the best? How do you choose?
Keratin: key protein that repairs and smoothes the fiber. Benefits, use at home or in the salon, guide prices and focus on Shampoing Madame d'Alexis.
Keratin Hair Products: How to Choose an Effective Treatment Without Weighing Down the Hair
Keratin is a protein naturally found in the hair shaft. In cosmetics, it is particularly beneficial when incorporated into a balanced routine: cleansing without stripping, strengthening without stiffening, and moisturizing and protecting the hair strands.
- A keratin product primarily helps improve the appearance of the hair shaft: it makes the hair feel smoother, adds shine, makes it more manageable, and leaves it feeling stronger.
- Keratin is no substitute for hydration: it must be combined with moisturizing and lipid-rich ingredients to prevent the hair from feeling rough.
- The Madame d’Alexis product that specifically features keratin is the Shampoo, formulated with plant-based keratin, cationic hyaluronic acid, prebiotics, and organic hydrosols.
- The Mask and the Day Serum round out the routine, but should not be marketed as keratin treatments.
- The rule: protein, hydration, fats, then protection—without overloading the fiber.
Madame d’Alexis products for a keratin treatment routine
To be precise: The Shampoo is the Madame d’Alexis product that contains plant-based keratin. The other products listed below are complementary additions to your routine that provide hydration, nourishment, and protection, without claiming to contain keratin.
Plant-Based Keratin Shampoo
- The keratin product from the line
- Cleans without sulfates or silicones
- Helps smooth and strengthen the hair shaft
Moisturizing Mask for After Keratin Treatment
- Does not contain keratin
- Helps maintain flexibility and comfort
- For lengths and ends only
Fiber Protection Day Serum
- Does not contain keratin
- Lengths and ends only
- Heat resistance up to 200°C
Why is keratin important for hair?
Keratin is one of the structural proteins in the hair shaft. It contributes to the hair’s strength, cohesion, and surface appearance. When the hair shaft is weakened by heat, coloring, friction, or harsh washing, it becomes duller, coarser, and harder to manage.
Brilliance
A smoother surface reflects light better, giving it a shinier appearance.
Flexibility
A keratin treatment with the right concentration can help the hair shaft appear smoother and more supple.
Discipline
For porous or frizzy hair, a keratin treatment routine can help reduce frizz.
If your hair looks like straw, check out our guide on what to do about straw-like hair.
Lack of keratin, lack of water, or lack of lipids: don’t confuse them
Dry hair isn't necessarily lacking in keratin. It may be lacking in moisture, lipids, or simply be too porous. Keratin helps support the hair's structure, but it isn't enough on its own to moisturize it. An effective routine, therefore, combines protein, moisture, and nutrition.
| Sign | Likely need | Helpful answer | Related guides |
|---|---|---|---|
| Dull, coarse hair | Hydration + lipids. | Moisturizing mask, finishing treatment. | moisturize dry hair |
| Persistent frizz | Irregular cuticle, porosity. | Mild shampoo, hair mask, serum. | prevent frizz |
| Brittle tips | Sensitized fiber. | A gentle routine, less heat. | dry, brittle hair |
| Springy Hair After Bleaching | The fiber is severely weakened. | Reduce heat, and alternate between hydration and protein. | elastic hair after bleaching |
What's the best keratin product?
The best keratin product isn't necessarily the one with the highest concentration. Above all, it should be suitable for regular use, rinse out thoroughly, be free of harsh sulfates, and be part of a routine that prevents protein overload.
Shampoo - Organic Hydrosols, Hyaluronic Acid, and Plant-Based Keratin
Madame d’Alexis Shampoo is the product in the line that contains plant-based keratin. It combines organic hydrosols, cationic hyaluronic acid, prebiotics, and plant-based keratin in a sulfate- and silicone-free formula.
To learn more about this topic, you can read the article on sulfate-free keratin shampoo.
At-Home Keratin Routine: Shampoo, Mask, Serum
The most effective routine isn't about slathering keratin all over your hair. It involves using a plant-based keratin shampoo, then maintaining elasticity with moisture and lightweight lipids.
Wash with the Shampoo
Use the Plant-Based Keratin Shampoo to cleanse your hair without harsh sulfates. Massage your scalp, then let the lather run down the lengths of your hair.
Stretch with Le Masque
The Mask does not contain keratin. It complements your hair care routine with ceramides, hyaluronic acid, and fine plant oils, applied only to the lengths and ends of the hair.
Protect with the Day Serum
The Day Serum does not contain keratin. Apply a small amount to the mid-lengths and ends to protect against heat up to 200°C and smooth the finish.
Limiting Excessive Heat
Avoid using a straightener or blow-drying your hair at very high temperatures. Opt for moderate heat and controlled drying.
For curly hair, your routine should remain flexible: don't try to straighten the texture. Check out the guide on keratin and curly hair.
Professional Keratin Treatment: Useful, but Not for Everyone
Professional keratin treatments, such as certain straightening treatments, serve a different purpose: to tame, smooth, and reduce frizz over a longer period of time. They should not be confused with a gentle shampoo containing plant-based keratin.
| Option | Objective | Benefit | Caution |
|---|---|---|---|
| Plant-Based Keratin Shampoo | A gentle, regular routine. | Simple, gradual, without forced straightening. | Do not use as a substitute for a deep conditioning treatment if the hair is severely damaged. |
| Face mask or protein treatment | Reinforce as needed. | Useful after heat styling, coloring, or bleaching. | Too frequent = stiff fiber. |
| Keratin Straightening | Long-term discipline. | Significantly reduces frizz. | Check for the absence of formaldehyde and verify the temperature. |
After a professional treatment or exposure to high heat, be sure to check out the guide on whether you should blow-dry your hair.
Mistakes to Avoid When Using Keratin Products
- Avoid overdoing protein treatments: too much keratin can make your hair feel hard, rough, or brittle.
- Neglecting hydration: A strengthened but dehydrated fiber remains dull and stiff.
- Confusing keratin shampoo with hair straightening: A shampoo maintains and improves the appearance of the hair; it does not permanently alter its structure.
- Using too much heat —such as a very hot straightener and repeated blow-drying—can damage the hair shaft.
- Choose a product containing formaldehyde: For hair-straightening treatments, always check the ingredients and ensure proper ventilation.
If your main goal is to strengthen your hair without weighing it down, be sure to read the article on natural alternatives to silicone.
Which Madame d’Alexis product should you choose based on your needs?
| Need | Product | Why | Area |
|---|---|---|---|
| I'm looking for a keratin product | The Shampoo | Contains the plant-based keratin from the line. | Scalp and hair lengths during shampooing. |
| My hair ends are dry after the keratin treatment | The Mask | Hydration, ceramides, and fine oils—keratin-free. | Lengths and ends. |
| I use heat | The Day Serum | Protection up to 200°C, lightweight finish, keratin-free. | Lengths and ends. |
FAQ - Keratin Hair Product
Is it a good idea to put keratin in your hair?
Yes, if keratin is used in the right amount and incorporated into a balanced routine. It can help the hair shaft look smoother, shinier, and better protected, but it must be combined with hydration.
What's the best keratin hair product?
A good keratin product should be gentle, free of harsh sulfates, rinse out easily, and be suitable for regular use. At Madame d’Alexis, the product in question is the Plant-Based Keratin Shampoo.
What are the benefits of keratin?
Keratin helps improve the appearance of the hair shaft: it makes hair feel smoother, adds shine, improves manageability, and makes hair feel stronger. However, it is not a substitute for hydration or lipids.
What types of hair can benefit from keratin?
Dry, porous, colored, bleached, frizzy, or sensitized hair can benefit from a keratin treatment routine. Those with fine hair should use caution to avoid making their hair stiff or heavy.
What are the disadvantages of keratin?
Too much keratin can make the hair strand hard, coarse, or brittle. The risk increases if you use protein treatments frequently without providing sufficient moisture.
Does keratin damage hair?
No, not when used properly. What can cause problems are excessive amounts, excessive heat, or certain poorly formulated professional treatments.
Does Madame d’Alexis Shampoo contain keratin?
Yes. Madame d’Alexis Shampoo contains plant-based keratin, along with organic hydrosols, cationic hyaluronic acid, and prebiotics. The Mask and Day Serum round out the routine, but they are not keratin-based products.
