Review on Moisture-Wicking Beanie Skull Cap: Perfect Helmet Liner for Optimal Performance. Fits Under Helmets with Ultimate Sweat Wicking Abilities. by Justin Miller

Bought this to wear under my Mandalorian helmet. I was surprised how well it worked; it kept sweat off my face and neck. I have fans in the helmet but this had a huge impact on cooling and comfort which helped me wear the helmet longer. I noticed that there was a color wash issue in some reviews. I dyed my hair purple a few days before wearing a helmet to a scam (Fan Expo Denver). I was expecting it to be purple by the end of the day, which it was in a few places. The best part is that it wicks sweat and doesn't leave my skin purple from the hair coloring. I pretreated it before washing and it turned white again like I had never worn it and it wasn't the purple hue. I highly recommend wearing it under any cosplay helmet.