Effects of Noni Oil on Hair Quality

Purpose: This study aims to investigate the effects of noni oil on damaged hair.Methods: Three doses of noni oil, namely, 2, 4, and 6 g, were added to hair quality enhancers and applied to the hairs in a sample bleached at level eight. The sample was then compared with damaged hair. A color meter was used to measure the L* value to identify changes in hair brightness. In addition, tensile strength, absorbance using methylene blue, and glossiness were measured to verify improvement in damaged hair.Results: The mean L* value of the sample increased with increased oil content, which indicated a statistical difference between damaged hair and sample 8L(6). The mean tensile strengths of all the hairs in the sample bleached at level eight and with oil treatment increased when compared with those of the hairs in the untreated damaged hair cohort. Statistical analysis demonstrated significant differences in hairs 8L(2), 8L(4), and 8L(6) from the sample. The mean absorbance of all hairs in the sample increased when compared with that of the damaged hair, with significant differences noted for hairs 8L(2), 8L(4), and 8L(6) from the sample from damaged hair. Last, the mean glossiness of hairs 8L(2), 8L(4), and 8L(6) from the sample increased with significant differences.Conclusion: Statistical analyses of the mean values between damaged hair and the hairs in the sample treated with oil revealed significant differences in brightness for the hair to which 6 g of noni oil were applied [8L(6)], tensile strength, absorbance, and glossiness. This finding indicates the effects of noni oil on damaged hair in terms of quality. Further studies using a variety of oils and natural extracts in this regard are in order.