In the past, I've used trial-sized, store-bought dry shampoos, but we didn't have any in the house. What I did have was some spices and cornstarch I bought for a pie filling. How skeptical are you right now? Probably about as skeptical as I was. But, with limited options, I took a risk and tried a DIY dry shampoo recipe that worked great! Read on for the full recipe for a quick, easy DIY dry shampoo for red hair and my review.