Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Indonesian Journal of Cosmetics
Rika Oktavia
Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Chemistry Economics, Econometrics & Finance Industrial & Manufacturing Engineering Medicine & Pharmacology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
THE EFFECT OF DIFFERENCES IN CHARACTERISTICS OF BIDARA LEAF EXTRACT (ZIZIPHUS MAURITIANA L.) OBTAINED FROM MACERATION, ULTRASONIC, AND SOXHLET METHODS Agitha Casanova Capah; Aida Febina Sholeha; Meysita Putri; Shinta Eryamana Putri; Ayesha Dinda Akmeltha; Rika Oktavia; Sabili Rachma Dinni; Iwan Syahjoko Saputra
Indonesian Journal of Cosmetics Vol. 2 No. 2 (2024): Indonesian Journal of Cosmetics
Publisher : Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/ijcos.v2i2.2158

Abstract

Bidara leaves are known to contain alkaloids, flavonoids, steroids, tannins, and saponins. This study aims to analyze how the three extraction methods used can affect the characteristics of bidara leaf extract. The extraction methods used in this study were the maceration method, the ultrasonic method, and the soxhlet method. The calculation of the yield value was carried out and the difference was seen with the largest number in the ultrasonic method 10.37% w/w, the soxhlet method 3.49% w/w, and the maceration method 3.68% w/w, then the stock solution calculation was carried out and the results were obtained ultrasonic method 0.1%, soxhlet method 0.0044%, and maceration method 0.012%. The evaluation used was phytochemical screening. The results of phytochemical screening showed that the leaf extract contained secondary metabolites, namely alkaloids, flavonoids, steroids, tannins, and saponins. It can be concluded that the three extraction methods in bidara leaves did not show differences in the presence of secondary metabolites, but affected their yield values.
IMPACT OF TITANIUM DIOXIDE CONCENTRATION ON WHITECAST FORMATION IN DAY CREAM FORMULATION Indah Puspita Sari; Rika Oktavia
Indonesian Journal of Cosmetics Vol. 3 No. 1 (2025): Indonesian Journal of Cosmetics
Publisher : Institut Teknologi Sumatera

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/ijcos.v3i1.2271

Abstract

Titanium dioxide (TiO₂) is widely used in day cream formulations as a physical UV filter due to its broad-spectrum protection and stabilizing properties. However, its tendency to produce a visible whitecast on the skin presents a major aesthetic drawback, particularly for consumers with medium to dark skin tones. This study aimed to formulate three variants of day cream containing different concentrations of TiO₂ (6%, 3.3%, and 2%) and evaluate their visual characteristics, pH compatibility, and consumer-perceived whitecast intensity to determine the optimal balance between UV protection and cosmetic elegance. All formulations were prepared following a standardized emulsification protocol using identical excipient compositions, with TiO₂ concentration as the only variable. Organoleptic and pH evaluations were conducted, followed by a sensory assessment involving 20 respondents who evaluated whitecast visibility and overall preference using structured questionnaires. All formulations demonstrated desirable visual and organoleptic characteristics, including homogeneous white color, soft mango fragrance, and smooth texture with a pH within the ideal physiological range (4.5–5.5). Sensory evaluation revealed that higher TiO₂ concentrations led to more pronounced whitecast. Formulation F3 (2% TiO₂) was most preferred by 75% of respondents for its minimal whitecast and natural finish. The results indicate a direct correlation between TiO₂ concentration and whitecast intensity. While higher TiO₂ concentrations improve opacity and UV protection, they compromise cosmetic acceptability. Formulation with 2% TiO₂ offers an optimal balance for daily cosmetic use, supporting the development of aesthetically pleasing and functionally protective skincare products.
Co-Authors Agitha Casanova Capah Aida Febina Sholeha Ayesha Dinda Akmeltha Indah Puspita Sari Iwan Syahjoko Saputra Meysita Putri Sabili Rachma Dinni Shinta Eryamana Putri