This study was conducted in order to determine the effects of an application of water-soluble PVA nonwoven fabric to auxiliary paper used for general and heat permanent operations using watermelon seed oil as the treatment agent for the protection and improvement of hair. For general permanents, 1.5g of watermelon seed oil was applied to the general permanent auxiliary paper and PVA nonwoven fabric. A heat perm was also tested using the method described above. A scanning electron microscope was used to observe hair morphology, and when both general perms and heat perms were wavy with the PVA nonwoven fabric and watermelon seed oil was applied, the keratin of the hair stabilized and remained glossy. Regarding the tensile strength, the application of PVA nonwoven fabric coated with watermelon seed oil had a meaningful effect, and its effectiveness for the care of damaged hair was confirmed. The effect of PVA nonwoven fabric and watermelon seed oil on hair wave formation was minor; however, in the experimental group, in which watermelon seed oil was not applied for a regular perm, the waveform was smoother and softer. When watermelon seed oil was applied, the weight of the hair was the greatest, and less change in the hair's pH was observed in the PVA nonwoven fabric and watermelon seed oil application group. Therefore, various research studies should be conducted for the development of permanent supplements and treatment products that can be applied safely as necessary.