To apply dip powder, follow these steps: Prep nails by trimming, shaping, and pushing back cuticles. Apply a bonding agent to ensure powder adhesion. Dip nails into the base powder, then apply an activator to harden the base layer. Repeat the base coat, dip, and activator process for desired thickness. Smooth out any bumps with a file and shape the nails. Finally, seal the powder with a top coat and buff for a smooth, glossy finish.