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Candle nut (Aleuritas molucana) is a plant that can produce oil to stimulate hair growth because it contains oleic acid which is an antioxidant. One core of candle nut seeds can contain as much as 50-60% oil, which can be made into hair care cosmetics through the preparation of hair tonic nanoemulsion. This study aimed to determine the effect of different concentrations of candle nut oil (5%, 6%, and 7%) on the characteristics and stability of a candle nut oil nanoemulsion hair tonic preparation. Candle nut oil was formulated into hair tonic nanoemulsion preparations and then tested for characteristics and stability for cycling test preparations. It was found that there were differences in the characteristics and stability values of formulas I, II, and III. The variations in the concentration of the active ingredient of candle nut oil (5%, 6%, 7%) affected the characteristics of the hair tonic by affecting the droplet size, polydispersity index, zeta potential, pH and viscosity of the preparation. The stability test using the cycling showed that the stability of the hair tonic was affected through changes in the pH value and viscosity of the preparation. Keywords: candle nut oil, characteristics and stability, hair tonic, nanoemulsion

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Melanin is a pigment contains in human skin which role as a UV-absorbing agent. One of the exogenous melanins can be obtained from squid (Loligo sp.) ink. Squid ink melanin has potent free radical protection activities. This study aimed to determine the physicochemical, stability, antioxidant, and UV protection activities of squid ink powder lotions. Squid ink powders were obtained from the drying process using HCl 0.5M and stored in the climatic chamber. Antioxidant activity was conducted quantitatively using the DPPH (2,2-diphenyl-1-picrylhydrazil) scavenging method. The best result of the DPPH scavenging activity was 29.12±0.023%, shown from formula III. UV protection activity was conducted by observing erythema scores in animal skin, which exposure to UV. This preparation inhibits the effect of UV exposure. Squid ink powder lotions are potential as a sunscreen product.

Hair loss is one of the most common hair problems, which usually happens at about 100 strands every day. It has been shown that candlenut oil can help to overcome the problem of hair loss. This study aimed to determine the effect of a hair tonic nanoemulsion in varying concentrations of candlenut oil on accelerating hair growth in Mus musculus. A nanoemulsion hair tonic was created because doing so can increase the solubilization of the oil. In the nanoemulsion form, the penetration of the medicinal ingredients into the skin is accelerated. In this study, nanoemulsions were produced with 5%, 6%, and 7% candlenut oil as formula 1, formula 2, and formula 3. A base without candlenut oil was used as a negative control, and a ginseng hair tonic obtained from the market was used as a positive control. The researchers conducted the hair tonic test by measuring the hair growth and hair density of the Mus musculus at 21 days. The hair growth was -0.442 mm for the negative control; 2.255 mm for the positive control; 1.352 mm for formula 1; 1.773 mm for formula 2; and 3.649 mm for formula 3. The hair weight was 3.20 mg for the negative control; 2.22 mg for the positive control; 2.26 mg for formula 1; 4.54 mg for formula 2; and 6.70 mg for formula 3. This study therefore demonstrated that hair tonic nanoemulsion of candlenut oil can accelerate hair growth. Keywords: candlenut oil, hair growth, hair tonic nanoemulsion