HairEvidence check
Topical Spironolactone for Hair Loss: Four Trial Findings
Two small 2025 studies tested different strengths, preparations and treatment periods.
ArticlesTopic 06
Hair
Thinning, shedding, chin hairs and ingrowns. What’s hormonal, what’s not, and what works.
HairEvidence check
Onion Juice for Hair Loss: The Limits Behind the 87% Regrowth Claim
The old juice study lost many participants. Newer trials tested a different botanical mixture.
HairEvidence check
Pea Sprout Extract for Hair Loss: Shedding Counts, Scalp Tests and Mice
AnaGain studies measured different outcomes, with small uncontrolled human studies and newer mechanistic work.
HairEvidence check
Apple Procyanidin for Hair Growth: Scalp Counts and Trial Limits
Scalp-tonic trials differ in concentration, sampling area and the comparisons behind their positive findings.
HairEvidence check
Silicon Supplements for Fine Hair: What the Strength Trial Measured
The nine-month study tested strands under tension. That differs from measuring scalp regrowth.
HairEvidence check
Tocotrienols for Hair Growth: What the Vitamin E Trial Can Tell Women
The often-cited eight-month study included two women at enrollment. A newer review does not turn that result into a new women's trial.
HairEvidence check
Adenosine Scalp Lotion for Women: Thickness Is Not Hair Density
A small year-long trial favored adenosine on hair appearance. Its measurements and a later pooled analysis put narrower limits on regrowth claims.
HairEvidence check
Coconut Oil for Hair Breakage: What the Fiber Studies Found
Protein-loss tests support a protective effect under studied conditions. Newer penetration and strength experiments complicate claims that coconut oil is uniquely effective.
HairEvidence check
Melatonin Scalp Solutions for Thinning Hair: What the Trials Measured
A small trial in women measured hairs in their growing phase. Larger uncontrolled reports tested a different formula containing biotin and ginkgo.
HairExplainer
Why Does My Ponytail Give Me a Headache?
The timing of the pulling and relief helps identify the pattern. Painful styling, migraine-like attacks and hairline damage need different attention.
HairEvidence check
Do Hair Supplements Like Nutrafol and Viviscal Work? What Trials Show
Branded hair supplements point to clinical trials, and those trials did report more hairs and less shedding. But they were small, from 40 to 70 women, and a 2026 review of 14 studies found no clear difference in total hair count, calling for more independent research. Here is what the trials measured, what they didn't, and what to check before you spend.
HairEvidence check
Can a Hormonal IUD or Implant Cause Hair Loss? What Studies Show
Some women notice more shedding after getting a hormonal IUD or contraceptive implant. The evidence is thin but points to a possible, uncommon link. A New Zealand monitoring study estimated hair loss in about 1 in 300 hormonal IUD users, and implant trials list hair loss among less common possible side effects. Stopping the pill is also a known shedding trigger. Here is what to know and what to track.
