Losing more hair
every day?

The treatment's effectiveness depends directly on whether the hair follicles are still active. Capilia Longa™, the main active in the FETĒN Serum, works by inhibiting the enzyme 5-alpha-reductase and reducing local DHT levels, the main culprit behind follicular miniaturisation. In the early and middle stages of androgenetic alopecia, when the follicle narrows but hasn't died, clinical studies show an 89% reduction in hair loss in 56 days and a density increase of +52% in 150 days. In advanced stages, with follicles that are already fibrosed or inactive, the treatment can't reactivate them, but it can slow the progression in bordering areas where the follicles still work. If your hairline has been receded for years and the area is completely smooth, the effect will be more limited. If the area still has some hair, even fine hair, there's a real chance of improvement. When in doubt, it's better to start sooner than to wait.

The process follows a clear clinical timeline. In the first 2-4 weeks, the most visible change is usually a reduction in daily hair loss: less hair in the shower, less on the pillow. This happens because Capilia Longa™ and the peptides (Anargy™ with Oligopeptide-1 and Epitensive™ with Oligopeptide-2) start regulating the follicular cycle from the very first application, lengthening the anagen phase and reducing premature shedding. At 56 days, clinical studies record an average reduction of 89% in hair loss. Between day 90 and 150 is when the improvement in density becomes visible to the outside eye: the existing hair gains thickness and the receding area starts to densify. The +52% hair density measured in studies appears once the 150-day cycle is complete. Consistency is critical: the follicular cycle is slow and skipping applications lengthens the timescales.

We guarantee the result for 60 days. If after two months of continued use you don't notice any difference —no reduction in hair loss, no change in thickness, no improvement in density— we'll give you a full refund, no questions asked. The guarantee exists because we trust the data: the studies with Capilia Longa™ were carried out under controlled conditions with participants who had early- and middle-stage androgenetic alopecia, and the results were consistent. There are cases where the treatment doesn't deliver the expected result: very advanced stages of alopecia, hair loss from an active, untreated hormonal cause, or simply that the individual genetic pattern responds differently. In those cases, we'd rather give you your money back than have you keep paying for something that doesn't work for you. To arrange the guarantee, drop us a line at hola@somosfeten.com with your order number.

Yes, if you want to keep the results. Hair loss from androgenetic causes —the most common in men— isn't a one-off event but an ongoing process. DHT keeps attacking the follicles as long as there's a genetic predisposition. The treatment works while it's present: it inhibits the enzyme, regulates the cycle and keeps the follicle active. If you stop, DHT picks its activity back up and the hair loss progresses. It's like sun cream: you don't cure the damage for life, you protect against it while you use it. What does last are the accumulated results —the hair you gained doesn't vanish the moment you stop— but the protection against new hair loss does stop. The good news is the routine is minimal: the shampoo goes in your daily shower and the serum takes 30 seconds to apply. Most users describe it as something they no longer even think about.

They act on different layers of the process and complement each other. The shampoo works during the wash: it cleanses the scalp, removing the sebum and residue that clog the follicles, and delivers Niacinamide (B3), Panthenol (B5), Provitamin B5 and Vitamins B6 and E, which reinforce the hair fibre, improve local circulation and reduce scalp inflammation. The serum is the underlying treatment: it's applied directly to the scalp without rinsing and works in a concentrated way on the hair follicle. Capilia Longa™ inhibits 5-alpha-reductase locally; the Anargy™ and Epitensive™ peptides stimulate the follicle's cell growth factors. Together they multiply the effect because they tackle the problem at two moments of the day with two different mechanisms. Using just the shampoo gives results, but adding the serum noticeably speeds up the timescales and deepens the impact.

The treatment is formulated for the most common types of hair loss in men: androgenetic alopecia (genetic), hair loss from chronic stress, seasonal shedding and general follicular weakening. In all these cases, the way Capilia Longa™ and the peptides work is relevant because they act on the active follicle, not on the external cause. What it can't reverse: follicles that are completely fibrosed with smooth, hairless patches for years, active hair loss from an untreated hormonal deficiency such as a thyroid condition, hair loss from chemotherapy or specific drugs, or alopecia areata (hair loss in circular patches of autoimmune origin). If your hair loss is recent, diffuse or progressive, you have a very good chance of responding well. If you've had a completely bald area with no visible follicular activity for many years, the treatment can help in the bordering areas but won't recover what's been lost in that area.