DHT causes hair loss by driving cells into senescence, and a polyphenol in black chokeberry may reverse this. A product using this theory is being considered for use alongside finasteride, minoxidil, and microneedling.
PP405 shows promise in treating severe hair loss, with 31% of users experiencing over 20% hair density increase in four weeks, faster than minoxidil and finasteride. Some users are skeptical about the results' significance and long-term efficacy.
PP405 and ABS-201 are promising treatments for male pattern baldness. PP405 shows rapid hair growth in human trials, while ABS-201 shows significant regrowth in animal studies but is still in early human trials.