Hyaluronic acid is a large molecular polysaccharide extracted from bovine vitreous humor by Columbia University ophthalmology professors Meyer and Palmer in 1934. Its aqueous solution is transparen...
N-Phenyl-1-naphthylamine CAS 90-30-2 is a colorless flaky crystal that turns light gray or brown when exposed to air or sunlight. N-Phenyl-1-naphthylamine is a commonly used antioxidant in natural ...
Propylene glycol ether and ethylene glycol ether are both diol ether solvents. Propylene glycol methyl ether has a slight ether smell, but no strong irritating odor, which makes its use more extens...
“Low carbon living” has become a mainstream topic in the new era. In recent years, green environmental protection, energy conservation, and emission reduction have gradually entered the public̵...
Everyone has a love for beauty. Everyone likes to dress up beautifully, regardless of age, region, or gender Therefore, modern people attach great importance to skincare. Compared to men, women ten...
In the past, due to the backward medical knowledge and limited conditions, people had little awareness of tooth protection, and many people did not understand why teeth should be protected. Teeth a...