| dc.description.abstract | Background: Red spinach leaves (Amaranthus tricolor L.) contain quite high
anthocyanins with red pigments that have the potential as natural dyes and are
relatively safer to use compared to synthetic dyes. Natural dyes can be used as dyes
in cosmetic preparations. Therefore, in this study, red spinach leaf extract was
formulated in a blush on stick preparation.
Objective: To make a blush on stick preparation using red spinach leaf extract as a
natural dye, evaluate the stability of the preparation, and test the effectiveness of
the preparation on the skin.
Methodology: The manufacture of red spinach leaf extract was carried out by
maceration method using 70% ethanol and added citric acid, then the solvent was
evaporated with the help of a rotary evaporator at a temperature of 50oC, then freeze
drying was carried out at a temperature of -40oC for 72 hours with a vacuum
pressure of 0.0010 mbar to obtain a thick extract of red spinach leaves. The
formulation of the blush on stick preparation used red spinach leaf extract dye with
concentrations of 5%, 10%, and 15%. Furthermore, testing was carried out on the
preparation, including organoleptic examination, homogeneity, stability with
parameters observed in shape, color, odor, and pH during 12 weeks of storage at
room temperature and spreadability, irritation and preference test (hedonic test).
Results: The blush on stick preparations produced with variations in the
concentration of red spinach leaf extract of 5%, 10%, and 15% showed light pink,
sheer pink, and rose colors, had a distinctive and homogeneous odor. The blush on
stick preparations were stable in 12 weeks of storage at room temperature, pH 5.0
5.6, the preparations did not cause skin irritation, and had good polishing power,
blush on stick with red spinach leaf extract at a concentration of 15% was the
preparation most preferred by the panelists.
Conclusion: Red spinach leaf extract can be used as a colorant in the formulation
of blush on stick preparations. The blush on stick preparation that is most preferred
by panelists is the preparation with a concentration of 15% red spinach leaf extract
which is rose-colored, stable during 12 weeks of storage, does not irritate the skin
and meets physical quality requirements. | en_US |
