Application · Hair fall & hair growth
Scalp serums, shampoos and hair oils for thinning hair and hair fall due to breakage. Developed by CSL formulation scientists.
Guires Cosmetic Science Lab
At Guires Cosmetic Science Lab, CSL formulation chemists develop hair fall shampoos, scalp serums and nutricosmetics for thinning hair, with results proven by phototrichogram, hair-pull and wash-count studies. With more than 10 years of experience, the team develops products for fuller-looking hair and less hair fall due to breakage, with claims worded correctly for each market.
Start your project with Guires CSLWhat shoppers look for now
Thinning hair is one of the most emotional beauty concerns for both women and men.
Shoppers want fuller-looking hair and less shedding they can see in the brush.
Topical serums and oral supplements are increasingly used together.
The science
Hair fall comes from breakage along the fibre and from changes in the growth cycle. Cosmetics can address breakage, shedding and the look of density; regrowth belongs to medicines.
Topical care
Caffeine and rosemary have performed comparably to minoxidil in randomised comparative trials, and piroctone olamine increased hair amount vs placebo. We formulate light scalp serums and shampoos around them.
Nutricosmetics
Oral marine-protein and pumpkin seed oil supplements increased hair counts vs placebo in randomised, double-blind trials. Through our group we develop supplements alongside topical products.
Key actives
Chosen for each market’s ingredient rules and your target cost. Tap an ingredient marked → to read the published evidence.
Claims & evidence
The claims brands ask for most, the study that supports each one, and how strong that evidence is.
| Claim brands ask for | Typical evidence | Evidence tier |
|---|---|---|
| “Reduces hair fall due to breakage” | Combing count study over 8–12 weeks | Tier 3 |
| “Thicker-looking hair” | Imaging and expert grading | Tier 3 |
| “Stronger hair” | Breakage testing | Tier 2 |
Clinical evidence
Peer-reviewed human studies behind the actives and approaches on this page. Each links to its record.
Randomised, open-label, multicentre non-inferiority · 210 men · 6 months
Proportion of hairs in the growth phase rose 10.6% with caffeine vs 11.7% with minoxidil, meeting the non-inferiority margin.
Minoxidil is a medicine; it appears here only as the comparator.
Dhurat R et al. Skin Pharmacol Physiol 2017;30(6):298–305 · PMID 29055953
Randomised comparative trial · 100 men · 6 months
Hair count rose significantly in both groups with no difference between them; scalp itching was less frequent with rosemary.
Active-comparator trial, not placebo-controlled.
Randomised, double-blind, placebo-controlled · 144 women with self-perceived thinning · 8 weeks
Significant increase in hair amount vs placebo on phototrichogram; the shampoo also lowered scalp oxidative-stress markers and TEWL.
Davis MG et al. Int J Cosmet Sci 2021;43(Suppl 1):S26–S33 · PMID 34424549
Randomised, double-blind, placebo-controlled · 60 women · 90 days
Terminal hair count increased significantly vs placebo (P<0.0001), with less shedding and better self-assessed quality of life.
Oral supplement (nutricosmetic).
Ablon G. Dermatol Res Pract 2015;2015:841570 · PMID 25883641
Randomised, double-blind, placebo-controlled · 76 men · 24 weeks
Mean hair count rose 40% vs 10% with placebo (P<0.001).
Oral supplement; the test product was a branded capsule.
Cho YH et al. Evid Based Complement Alternat Med 2014;2014:549721 · PMID 24864154
These are published studies on ingredients, methods and routines, not on products we have made. A finished product needs its own testing before a claim goes on pack, and we design that study with you. See the full evidence library
Regrowth claims, and actives such as minoxidil, make a product a medicine in most markets. Cosmetic claims focus on breakage, thickness and appearance.
Concept spotlight
Example concepts to show the range. Every project starts from your own brief, and the finished formula belongs to you.
A fast-dry daily serum for fuller-looking hair.
A mild shampoo with piroctone olamine and proteins to reduce breakage.
A marine-protein supplement paired with a topical serum.
Sectors
Stay ahead in hair fall & hair growth with regulation updates, the latest research, ingredient spotlights, recalls and market trends, written by the Guires CSL formulation, testing, clinical and regulatory teams.
Explore market insights
FAQ
No. Regrowth and alopecia claims are medicinal in most markets. Cosmetic claims cover breakage, shedding and the look of density.
Usually 12 to 24 weeks, because the growth cycle is slow.
Yes, through our group’s food and nutraceutical team, with the right regulatory route.
You do. We sign an NDA before you share your brief, and the formula and technical file are handed over at the end of the project.
Every hair fall & hair growth project at Guires CSL runs inside an ISO 9001 certified quality system, with documented methods, calibrated instruments, traceable raw materials and reviewed reports, so the results behind your product can be checked and defended.
Guires CSL quality & accreditations
In their words
“Our scalp serum is non-greasy and fast-absorbing, with every active kept stable and fully solubilised.”
“A phototrichogram-based study measured hair density and growth-phase ratios, giving us robust data for our hair-fullness claims.”
“Cosmetic hair-appearance endpoints were clearly separated from therapeutic ones, in both our study design and our claims wording.”
“Replacing heavy oils with lightweight carriers and esters reduced scalp residue without compromising active delivery.”
Insights
Guidance from our formulation, testing and regulatory teams on the topics this page covers.
How UAE authorities classify high-performance skin care, and how claim wording decides the route.
Read articleBhringraj is a classic Ayurvedic hair herb. Animal studies are promising, but human data come only from multi-herb oils and small open studies. CSL formulation…
Read articleBiotin is sold widely for hair, mostly as a supplement. Reviews find no benefit without a deficiency, and high doses can distort blood tests. CSL formulation scientists…
Read articleFrom the CSL bioscience lab
Start a project
Our formulation chemists, testing scientists and regulatory specialists work alongside your team, from the first brief to a market-ready product. Bring a brief, a benchmark or just an idea: a scientist will reply within one working day with next steps and an indicative scope.
