Kiierr.com

I bought the cap and battery in March of 2021. I used it for two years and i had many comments on how my hair was thickening. Now after a year of not using the cap my hair is thinning out again. I am about to start using it again as suggested. I found out that it really did work.

A great way to regrow hair without ingesting supplements or using gimmick topical solutions. The ease of use is tremendous and convenient as well. I found it best to pick a consistent time of day to wear the cap every other day and stick with it, so you don't need to worry about forgetting a session. For me it is during lunch break when I know I won't be up and running around. The regrowth was visible and my wife started seeing the results long before I did.

I purchased the Kiierr 312 red therapy cap in April 2025 and received the product in May of 2025. I've been struggling with hair loss for many years due to thyroid issues and menopause/aging. The hair shedding really began to increase so it was time to invest in something to help. After approximately 2 months of consistent use I noticed the shedding had really subsided. Now, entering month 4 I can see and feel new growth! My hairdresser can tell the difference too. I'm excited to continue my journey with the Kiierr 312 cap and can't wait to see what the next few months look like! I would 100% definitely recommend this product.

After several years of use my cap stopped working. Allsion from customer service helped me troubleshoot, suggested a replacement battery pack and because of some logistical/timing issue she was able to get me a free battery pack replacement which solved my problem. THANKS!

I am so happy I bought this. I actually see hair growing in and it is thicker. Worth it.