What does protein filler do for hair?

Author: Cecilia Boehm  |  Last update: Wednesday, April 2, 2025

Protein fillers are hair treatments designed to restore strength and vitality to damaged hair. They contain proteins, amino acids, and other nutrients that help mend and strengthen the hair root and shaft. These treatments can particularly benefit those with damaged or chemically treated hair.

Can I leave protein fillers in my hair overnight?

Yes we understand. Some of us are daredevils but don't leave your protein treatment overnight. You'll only damage your hair.

How often can I use protein fillers?

As a general rule, it is safe to use a protein treatment weekly for the first month to restore hair's strength and elasticity. Use once or twice a month thereafter. Overuse of protein treatments can actually dry hair out.

How long does hair filler treatment last?

During clinical efficacy studies, patients observed an average 22.3% increase in hair density and an average 26% increase in hair thickness after 1 session every 2 weeks for a period of 8 weeks (4 sessions). A full Hair Filler treatment at Sarasin Clinic could counteract hair loss for up to about a year.

What is the difference between keratin and protein filler?

Protein treatments focus on strengthening the hair and repairing damage while keratin treatments aim to smooth and straighten hair. Protein treatments typically contain ingredients such as hydrolyzed keratin or other types of protein and their goal is to improve the hair's strength, moisture retention and texture.

protein hair fillers explained | 2024

Is Olaplex a protein filler?

While some OLAPLEX products contain some protein, the amounts are minimal and not enough to be considered a protein treatment. Therefore, OLAPLEX is not a protein treatment. OLAPLEX works at a molecular level to rebuild the hair internally. Our hair contains millions of disulfide bonds.

Which is better for hair, protein or keratin?

It depends on your hair's condition and goals. Damaged or weak hair may benefit from protein, while frizzy hair seeking smoothness and straightening may prefer keratin.

What are the side effects of hair fillers?

Most side effects, such as redness, swelling, bruising, mild tenderness, or itching, are temporary and resolve within a few days. Proper aftercare, like avoiding harsh hair treatments and sun exposure, can help minimize discomfort.

Do I need a filler to go from blonde to brown?

According to Stenson, “fillers are the most vital step when going from blonde to brown.” “[A filler shade] keeps the hair from turning a muddy, dull color when you apply the dark color,” adds Lee. Your filler shade won't be quite as dark as your desired, final shade and will likely look more reddish or golden in tone.

How often should I use hair filler?

Intensive Hair Filler treatment: 1 session every 2 weeks, for 8 weeks (= 4 sessions). Then 1 monthly maintenance session for 4 months.

What does a protein filler do for your hair?

Protein fillers are hair treatments designed to restore strength and vitality to damaged hair. They contain proteins, amino acids, and other nutrients that help mend and strengthen the hair root and shaft. These treatments can particularly benefit those with damaged or chemically treated hair.

Is too much protein treatment bad for hair?

Yes, excessive protein can compromise hair health. When there's an abundance of protein, the hair can become stiff, dry, and brittle. This lack of flexibility causes the hair to break more easily. If your hair feels tough, hard, and snaps easily, you might be experiencing protein overload.

When should you not put protein in your hair?

A good way to test if your hair has too much protein is to use a protein treatment on your hair. If your mane still feels dry afterwards then that's a sign that your hair has protein overload and needs more moisture to target damaged tresses.

Can I wash my hair after fillers?

Hygiene: Keep the treated area clean and dry. Avoid using hair products, such as gels or hairsprays, for at least 48 hours following the treatment. Showering: You may shower and wash your hair as usual, but avoid using hot water or steam on the treated area for at least 24 hours.

Do I shampoo after protein treatment?

As we said before, washing hair is prohibited for the first 72 hours after protein treatment. Washing hair during this period may cause the protein to fade from the surface of the hair, which will reduce the effectiveness of the treatment and weaken its results.

What happens if you don't fill blonde hair before going dark?

Color tip of the day: when going blonde to dark, it's super important to fill the hair. If you don't fill the hair first, the color will look hollow and dull and will fade incredibly fast & to not a pretty color.

What is level 7 hair?

The level system is made up of 10 numbers which help determine the depth level of your natural hair. 1 is black, 5 is light brown, 6 is dark blonde, 7 is blonde and 10 is the lightest blonde.

What is the best color depositing conditioner?

Our favorite color-depositing conditioner is the dpHue Gloss+ thanks to its wide range of shades, easy application, and ability to soften and hydrate hair. For a clear gloss that adds shine to any hair color, we recommend the Pureology Color Fanatic Top Coat + Sheer.

What is the disadvantage of fillers?

The most serious risk associated with dermal fillers is accidental injection into a blood vessel. Filler that enters a blood vessel can cause skin necrosis (death of tissue), stroke, or blindness.

Can fillers cause hair loss?

Since facial anatomy is highly complex and individually variable, injections to relatively “unexplored” areas for filler placement, carry the potential of new complications. Alopecia following filler injection is a newly reported complication of dermal fillers, following the posterior temple lifting technique.

What is the XL hair treatment?

The procedure consists of small injections to the hair follicles with a serum made of hyaluronic acid, peptides, amino acids, growth factors, vitamins and antioxidants. New hair follicles can be seen with in 3 months of the treatment. The U225 intradermal injector gun is used to microneedle the serum into the scalp.

What is the number one protein for hair growth?

1. Oral (Natural Foods & Supplements) Eggs, berries, shrimp, fatty fish, tofu, legumes, nuts and cottage cheese are great sources of protein. Adding these foods to your diet can prevent hair loss over time and make the hair look healthier.

How do I know if my hair needs protein or keratin?

Signs And Symptoms of Protein Deficiency in Hair
  1. Your Hair is Super Porous.
  2. Your Hair is Limp and Stringy.
  3. Your Hair Has Low Elasticity.
  4. Your Hair Has Been Colored Recently.
  5. There's Increased Shedding.
  6. Lack of Elasticity.
  7. Your Hair Feels Gummy.
  8. Your Have Split Ends.

Is biotin or keratin better for your hair?

Keratin treatment has not shown any effective improvement on thin and fine hair, it works better on thick hair. Whereas biotin therapy helps in assisting hair-regrowth and helps in achieving thick and healthier hair.

Previous article
What is the best height for box squats?
Next article
What stimulates a muscle?