Vitamin D, creatine and hair: reading the evidence calmly
Separate blood-test findings from hair evidence. Maria Lopez with Procapil 3.5% is external cosmetic care, not an oral supplement or a correction for deficiency.
| Test | 25(OH)D reflects vitamin D status |
|---|---|
| Units | 1 ng/mL = 2.5 nmol/L |
| Creatine | A 2025 trial lasting 12 weeks |
| Care | Serum does not correct a vitamin deficiency |
In this guide
A clear question makes choices easier
Maria Lopez with Procapil 3.5% offers a way to consider scalp care separately from every number on a test report. Is there a deficiency? Does it explain the shedding? Will correcting it restore density? These are three different questions. Keep the result with its units, date and a list of supplements you use. This separates cosmetic care from nutritional needs without adding a new bottle after every video.
Read 25(OH)D with its unit
25(OH)D is the main indicator of vitamin D status. Reports use ng/mL or nmol/L: 1 ng/mL equals 2.5 nmol/L. Comparing numbers without their units can therefore mislead. Check the reference range and date, and remember that measurement methods vary. This article sets no 'ideal hair number' and no dose to work out from a result yourself.
An association is not a supplement promise
A comparative study published in 2016 included 45 women with female pattern hair loss and 45 controls. Average vitamin D was lower in the first group. The study compared groups; it did not test a supplement to demonstrate regrowth. Correcting a confirmed deficiency has its own purpose. Buying vitamin D as a guaranteed shedding solution is a different conclusion, which that study does not establish.
Creatine: did the trial actually measure hair?
In a 2025 randomized trial, 38 resistance-trained men completed 12 weeks; one was excluded from hair-outcome analysis because measurements were missing. There was no significant difference between creatine and placebo in DHT or hair measures. That is useful evidence within a small sample and short period. Some authors disclosed industry relationships. It is not an instruction to start or stop creatine, or a guarantee covering all long-term use.
What each finding can tell you
Keep each result within the question it can answer. A hormone level does not measure density on its own, and a difference between groups does not automatically become a prescription. That distinction makes research easier to read without rushing into a purchase.
| Information | What it helps us understand | What it does not establish |
|---|---|---|
| 25(OH)D | Vitamin status within a health assessment | That it is the sole cause of shedding |
| Case-control study | An association between two groups | That a supplement will restore hair |
| Short creatine trial | Sample results over a specified period | Every person's long-term outcome |
Care for your scalp without chasing doses
Too much supplemental vitamin D can be harmful. Do not double doses to chase a number or a hair result. If deficiency correction is prescribed, keep those directions rather than replacing it with serum. Maria Lopez, in a 50 ml dropper bottle, offers a separate cosmetic step: follow the packaging on a clean, intact scalp, massage gently and leave in without rinsing. Do not use on broken or inflamed skin; stop if irritation develops. Pregnancy or breastfeeding does not imply automatic suitability. If this is the step you want, explore the order form on this page.
Frequently asked questions
Does the same vitamin D number mean the same result?
Check the unit, reference range, date and method. 1 ng/mL equals 2.5 nmol/L.
Does low vitamin D explain all the shedding?
Not necessarily. Deficiency and shedding can coexist without that number being the complete explanation.
Did the creatine trial settle every possibility?
No. Hair measures showed no significant difference during 12 weeks in the men studied, but that does not cover every population or duration.
Does Maria Lopez replace a prescribed supplement?
No. It is external care, not an oral vitamin. Do not stop or change prescribed medication or supplements to replace them with serum.
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