A once-daily scalp serum combining branded peptide-and-plant blends with caffeine, melatonin, and rosemary, sold to men with thinning hair. No study tests the finished product; evidence covers only some ingredients, at undisclosed amounts. The claim that it beats the standard topical drug rests on one study published outside the main medical literature. Gentle, expensive, benefit unmeasured. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Ferritin | 70–100 ng/mL | Low iron stores shift follicles into the resting phase |
| TSH | 0.5–2.5 mIU/L | Under- and overactive thyroid both cause diffuse hair loss |
| 25-Hydroxyvitamin D | 40–60 ng/mL | Follicle vitamin D receptors are required for normal cycling |
| Serum zinc | 90–120 µg/dL | Deficiency causes diffuse shedding and brittle shafts |
| Total testosterone | Men 500–800 ng/dL; women 15–70 ng/dL | Establishes whether an androgen excess is contributing, particularly in women |
| DHEA-S | Men 200–400 µg/dL; women 100–250 µg/dL | Elevation points to an adrenal source of androgen excess |
| Complete blood count | Haemoglobin 14–15 g/dL men, 13–14 g/dL women | Detects anaemic shedding independent of ferritin |
| Phototrichogram | Hairs/cm² and shaft diameter | The efficacy assessment; an impression becomes a number |
Cadence: Scalp inspection at days 2 and 14; standardised photography at weeks 12 and 24, then every 6 months; any abnormal baseline laboratory value repeated at week 12. The week-24 photographic comparison is the decision point.