Unfortunately, almost 100% of non-natural dry shampoos contain alcohol, which is not skin/scalp friendly at ALL! It’s just a necessary evil for the product formulation to work.
Natural dry shampoos are a different story.
If you check the ingredients, you’ll find that almost every natural dry shampoo uses clean natural powder as its main ingredient. The takesumi detox dry shampoo, for example, uses dry rice starch and activated charcoal to absorb excess oil and dirt from your hair follicles. By using such ingredients, we avoid applying anything that could result in irritation to your scalp (and skin). Most natural dry shampoos on the market will use similar natural powders, and avoid toxic ingredients such as talc and alcohol.
When looking for your next dry shampoo, always read the label and check for alcohol. Sometimes the name on the label of aerosol dry shampoo is disguised and displayed as SDA 40-B or Pure SDA 40B Denatured Alcohol.