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A new light therapy claims to reduce hair loss markers by 92% using a specific wavelength range. Users discuss the cost and effectiveness of devices, with some expressing skepticism and others considering alternative treatments like red light therapy and vitamin D exposure.

PP405 is a new hair loss treatment showing early promise with a 20% hair density increase, but skepticism exists due to past failures of similar treatments like Pyrilutamide, RU58841, and Bimatoprost. Users debate its potential effectiveness, with some hopeful due to Google's involvement, while others urge caution without more evidence.

Hair fibers can effectively cover thinning hair when used with minoxidil and hairspray but require daily application and can be inconvenient in certain conditions. Some users prefer treatments like finasteride, dutasteride, microneedling, or wigs due to the maintenance and limitations of hair fibers.

Finasteride mainly prevents further hair loss by blocking DHT but doesn't reverse existing damage, while minoxidil can promote regrowth by waking dormant follicles. Ketoconazole helps with inflammation, but none of these treatments can reverse fibrosis or structural changes around hair follicles.

The user is considering resuming finasteride after a 6-month break and is debating the necessity of extensive blood work, including hormone and health markers, to establish a baseline. They are unsure if the tests are necessary since they experienced no side effects previously.