Techni Art L’Oréal Hair Powder Volume and texture hair powder for big voluminous hair. How to give your hair volume Shake before use and then sprinkle the powder into the palm of your hand. Apply to dry hair through the lengths and ends to give hair volume. For more volume, apply directly to the roots, shaking the container 1 cm from the scalp. Very useful for volume updo hairstyles and to make back-combing easier.