Cosmetic Whitening Additive Kojic Acid Palmitate Powder
1. What is the solubility of kojic acid Palmitate Powder?
The oil phase dissolves, kojic acid dipalmitate is difficult to add
to the formulation, and crystal precipitates easily.
To solve this problem, it is recommended to add isopropyl palmitate
or isopropyl myristate to the oil phase containing
kojic acid dipalmitate, and heat the oil phase to 80 ° C, and keep
it for 5 minutes until the kojic acid The palmitate is completely
dissolved, then the oil phase is added to the water phase and
emulsified for about 10 minutes. The pH of the end product obtained
is usually around 5.0-8.0.
2.What is the solubility of kojic acid?
Kojic acid is easily soluble in water, alcohol, acetone, hardly
soluble in most other solvents.And slightly soluble in ethyl
acetate,ether, chloroform, and pyridine.
Although kojic acid is soluble in water, its solubility is small,
and it's great influenced by temperature, which is conducive to
concentration and cooling crystallization.
The kojic acid powder solution with a concentration of 0.5% is
treated at 100 ° C
for 3 hours or sunlight for 5 hours at different pH. As a result,
the solution becomes pale yellow to yellow-brown in the pH range
of 5 to 7, and There was little change in pH4.
Skin Whitening Kojic acid is a kind of specialized inhibitor for
melanin.At present it is assigned into various kinds of cosmetics
for curing freckles,spots on the skin of old man,pigmentation and
Skin Whitening Kojic acid can also eliminate free radical,
strengthen cell activity of cell and keep the food fresh.
Skin Whitening Kojic acid also has antibacterial and antifungal
Kojic acid can reduces age spots and pigmentation on face and body,
typically caused by sun damage.
It can eliminate free radicals, strengthen cell activity.
Kojic acid is also known to have an anti-microbial effect.
Non-toxic to person and livestock, pollution-free pesticide in