Choosing a red light scalp cap
Start with the actual cap: how it fits, how it is powered and how its controls work. Those details are easier to compare than an unverified result claim.
Fit comes first
An adjustable cotton cap is different from a rigid helmet. Check the brim, inner surface, fit adjustment and where the power connection sits. The right choice depends on the practical way you expect to use it, not just the number printed beside an LED photograph.
Understand the power connection
A wired controller, adapter and booster cable play different roles. A product that can work with a suitable power bank does not necessarily include that power bank. Read the exact contents and use the power configuration given in the instructions.
Separate equipment from promises
A wavelength describes light, not an individual outcome. Compare confirmed features and be cautious about universal hair-growth timelines or before-and-after photos without context. If scalp concerns need assessment, seek appropriate professional advice.
Follow the instructions supplied with the product. No medical outcome is promised.