Wella SP Weightless Finish Finishing Care. Conditions for natural volume. Wella SP Volumize Weightless Finish Finishing Care is an intensive care for fine hair that creates long-lasting volume. Weightless intensive care for fine hair. Strengthens and stabilises the hair from within and provides volume. Weightless Finish. Directions for use, Spray evenly onto towel-dried hair. Do not rinse out. Dry as usual.