Begin with the exact bottle
KilgourMD markets The Prevention and The Treatment as separate scalp serums. The product names describe the brand’s positioning; they should not be read as proof that a cosmetic prevents or treats a diagnosed hair-loss condition. Check the current full ingredient list and directions for each.
The Treatment’s marketing highlights ingredients including caffeine and saw palmetto. An ingredient appearing in a formula is not the same as evidence that the complete product produces a particular clinical result. Do not import evidence from an oral supplement or a different topical concentration.
Compare one product with the complete routine
The brand provides guidance on using its serums, including a combined routine. Read that guidance with the labels rather than assuming both bottles are required for every buyer. Consider the number of applications and how the routine fits your wash and styling schedule.
If you introduce two products at once, it becomes harder to identify which causes an unwanted reaction or a change in feel. Keep a record of the actual products and start dates. Follow label directions and do not compensate for missed applications by inventing a higher dose.
Put study claims in context
For any headline percentage, ask which serum or combination was studied, how many participants were included, how long the study ran and what was measured. A brand-sponsored consumer assessment and an independently replicated controlled trial carry different information.
A before-and-after image cannot by itself control for lighting, styling, camera distance or concurrent treatments. We have not independently verified a growth advantage for either serum or conducted a comparison with other brands. Use our clinical-claims guide to keep appearance claims and treatment evidence distinct.
Check the cost after the starter offer
Compare the regular delivered price of one bottle with the complete two-product routine. Read subscription renewal and cancellation terms separately from the initial discount. Ask how long the bottle is expected to last under the labeled directions, and treat the answer as an estimate until you know your own use.
Choose a cosmetic scalp routine for a clear, manageable purpose and ingredient fit. The brand name and premium packaging do not replace those checks. For a hair-loss concern, deciding whether to seek a diagnosis should not depend on whether a serum bundle is on sale.
Sources & further reading
Product pages establish brand claims and label facts. They do not independently validate efficacy. Sources checked 21 September 2026.
- KilgourMD: The Prevention scalp serum
- KilgourMD: The Treatment scalp serum
- KilgourMD: serum application guidance