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research Scientific Opinion on the substantiation of health claims related to spermidine and contribution to normal hair growth (ID 1705) pursuant to Article 13(1) of Regulation (EC) No 1924/2006

3 citations , June 2011 in “EFSA Journal”

This review evaluates health claims regarding spermidine's contribution to normal hair growth and finds no evidence to support a cause-and-effect relationship.

research Role of scalp health in achieving optimal hair growth and retention

5 citations , May 2021 in “International Journal of Cosmetic Science”

This review discusses the evidence for a cause-and-effect relationship between scalp condition and hair condition, and reports no new clinical results from trials.

research Formulation and Evaluation of Fermented Rice Water-Based Herbal Hair Serum for Hair Growth and Scalp Health

April 2026 in “Zenodo (CERN European Organization for Nuclear Research)”

This study suggests that rice water may improve hair health by strengthening hair, reducing breakage, and promoting growth due to its nutrients and antioxidants, even as it becomes a popular ingredient in various hair care products despite limited rigorous research.

research Formulation and Evaluation of Fermented Rice Water-Based Herbal Hair Serum for Hair Growth and Scalp Health

April 2026 in “Zenodo (CERN European Organization for Nuclear Research)”

This research suggests that rice water may improve hair health by reducing breakage, repairing damage, enhancing flexibility, and hydrating the scalp, making it a popular choice for natural hair care products.

research HERBAL HAIR OILS: TRADITIONAL FORMULATIONS, MEDICINAL PLANTS, MECHANISMS, AND SCIENTIFIC VALIDATION FOR HAIR HEALTH AND GROWTH PROMOTION

April 2026 in “Zenodo (CERN European Organization for Nuclear Research)”

This review highlights that herbal hair oils, incorporating medicinal plant extracts and carrier oils, show promise in promoting hair growth and scalp health by demonstrating antioxidant, anti-inflammatory, and antimicrobial properties, with clinical evidence supporting reductions in hair fall and dandruff with minimal side effects.

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Community Join

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community The new growth in hair loss research: With increasing evidence of its impact on mental health, scientists are pushing forward with breakthroughs on balding. Later this year, scientists will launch one of the first ever clinical trials with hair follicles grown entirely from stem cells.

324 upvotes 7 years ago

Hair loss impacts mental health, with treatments like Minoxidil, finasteride, and stem cell transplants discussed. There is hope for future breakthroughs, but current treatments are limited, and awareness is lacking.

community Is Biotin or Keratin shampoo better for hair health/growth

6 upvotes 2 years ago

Biotin and Keratin shampoos are discussed for hair health and growth. Users suggest shampoos alone don't significantly aid hair growth.

community Oral Biotin and Topical Minoxidil have a synergy effect in increasing hair growth, the study was only done in healthy subjects and it was only 14 days but it does prove that biotin can play a significant role as an adjunct treatment.

168 upvotes 1 year ago

Oral biotin combined with topical minoxidil may increase hair growth rate, though the study was limited to healthy subjects and did not measure hair density. Some users report personal benefits from biotin, such as faster nail growth and healthier hair, but concerns about acne and study quality were also mentioned.

community Scalp barrier integrity and its potential link to hair follicle health

in Technology 1 upvotes 5 months ago

A healthy scalp barrier is crucial for hair growth, and ceramides may play a key role in maintaining it. The conversation suggests that focusing on scalp health, alongside treatments like Minoxidil, Finasteride, and RU58841, could improve hair follicle health.

community Does applying Epidermal Growth Factor (EGF) make a difference in hair growth?

4 upvotes 3 years ago

Applying Epidermal Growth Factor (EGF) topically may improve skin and potentially promote scalp health and hair growth, especially after microneedling. The user shares their positive experience with EGF and provides a product link.

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Learn

10 / 24 results

learn retinol

Does retinol improve scalp health or help other hair growth treatments work? No trial has tested over-the-counter retinol for hair; the studies used prescription tretinoin (retinoic acid), mostly in the lab, with mixed results. Retinoids need caution in pregnancy, so ask a doctor first.

learn Folic acid

How does folic acid support hair follicle health and growth at a cellular level? Folate is required for the DNA synthesis that fast-dividing hair matrix cells depend on, and severe deficiency causes anemia—but no published trial has given folic acid to people with hair loss and measured the result, so a growth effect is a mechanism, not a finding.

learn Vitamin B6

How does Vitamin B6 support healthy hair growth? Vitamin B6 is essential for amino acid metabolism, supporting normal hair growth.

learn Vitamin B12

Can topical products containing Vitamin B12 improve scalp health and hair growth? Topical Vitamin B12 may not significantly improve hair growth unless there's a deficiency.

learn Vitamin E

What does Vitamin E do for hair growth and scalp health? One small trial (38 people) of oral tocotrienols, a form of vitamin E, reported more hairs; there is no independent confirmation. High-dose vitamin E carries bleeding and prostate-cancer risks.

learn Dexpanthenol

Provitamin B5 used in hair and skin products as a moisturiser; evidence for hair growth is limited to lab studies and small uncontrolled reports.

learn Hair Multiplication

extract, clone, and reinsert your own hair cells

learn Procyanidin

Plant polyphenol studied in small, manufacturer-run hair-growth trials; not an approved hair-loss treatment.

learn Castor oil

A plant oil used in cosmetics and traditional medicine. It is popular in hair care, but no controlled human trial has tested it as a hair-growth treatment.

learn Vitamin D

Low vitamin D is linked with some types of hair loss, especially alopecia areata, but there is no good evidence that supplements help hair unless you are deficient. Ask a doctor about a blood test before you supplement.

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