Is aerosol or powder dry shampoo better?

It comes down to preference. Aerosol sprays (Batiste, amika, Living Proof, Moroccanoil) are faster to apply and distribute evenly, while loose powders like the Kitsch rice-protein formula avoid propellants and let you control placement at the roots. Powders take more practice to apply without clumping but appeal to shoppers avoiding aerosols.