This baseball cap is secretly a hair growth device – and it actually works

★★★★★What we love: Discreet baseball cap design, comfortable to wear, and I noticed baby hairs sprouting while my scalp acne was calmedTake note: Quite heavy to wear“Hair growth devices only stand a chance of working if you actually use them, and the HigherDOSE red light hat was easily the one I used most consistently. It looks exactly like a baseball cap, so I happily wore it while working, pottering around the house and watching TV without feeling like I was wearing a piece of beauty tech.Beneath the baseball cap, there are 120 LEDs delivering 650nm red light, with sessions taking just 10 minutes. Beauty Pie's all-systems-grow cap does pack in 125 LEDs and delivers 655nm, but I found the HigherDOSE hat more comfortable and more my style. Yes, £449 is a lot of money, but the hat design made it easy to stick with.For this device, HigherDose boasts some great stats. Based on a survey of 28 participants wearing the hat for 16 weeks, 83 per cent saw hair growth in sparse or balding areas within the 16 weeks, and 93 per cent noticed an improvement to their scalp and hair health. My own experience was just as positive. I definitely clocked more baby hairs sprouting around my parting and hairline, while my scalp acne became noticeably calmer with fewer breakouts and irritation.”Device type: Hat Light modes: Red (650nm) Wireless: Yes Treatment time: 10 minutes Uses per charge: 8-10