Nano Zinc Oxide for Cosmetics
Sunlight includes X-rays, ultraviolet rays, infrared rays, visible light, and electromagnetic waves. Moderate exposure to ultraviolet rays can promote human health, but excessive ultraviolet radiation can damage the body's immune system, accelerate skin aging, and lead to various skin problems.
Keywords:
Nano Zinc Oxide for Cosmetics
Category:
Product Details
Purpose (function)
Sunlight comprises X-rays, ultraviolet (UV) rays, infrared rays, visible light, and electromagnetic waves. Moderate exposure to UV radiation can promote human health; however, excessive UV exposure can damage the body’s immune system, accelerate skin aging, and lead to various skin problems. Nano-sized zinc oxide effectively shields against both long-wave ultraviolet (UVA, wavelengths 320–400 nm) and medium-wave ultraviolet (UVB, 280–320 nm). Thanks to its nanoparticle characteristics, it exhibits excellent visible-light transmittance. At the same time, nano-sized zinc oxide is non-toxic, odorless, and non-irritating to the skin. Under sunlight—especially UV radiation—it can spontaneously decompose in water and air, releasing freely mobile, negatively charged electrons while leaving behind positively charged holes. These holes can activate oxygen molecules in the air, giving nano-sized zinc oxide certain antibacterial and bacteriostatic properties. Therefore, using nano-sized zinc oxide as a sunscreen additive in cosmetics represents a win-win solution.
Features (Advantages)
1. Compared to other nano-metal oxide powders, this product exhibits significantly superior shielding and reflection efficiency. For instance, when compared with titanium dioxide, the two materials show similar shielding efficiency at wavelengths below 350 nm (UVB). However, in the wavelength range of 350–400 nm (UVA), zinc oxide demonstrates markedly higher shielding efficiency than titanium dioxide.
2. The product exhibits a fine average particle size under electron microscopy, enabling it to absorb ultraviolet light more effectively—particularly UVB radiation in the 280–320 nm range. Meanwhile, zinc oxide has a refractive index (n=1.9) and low diffuse reflectance of light, giving it excellent visible light transmittance.
3. The product undergoes continuous purification and impurity removal, and with the support of scientific and technological achievements, its content of harmful impurities is significantly lower than the requirements of the industry standard HG/T4532-2013 “Zinc Oxide for Cosmetics.”
Product Metrics
| Project | Product Metrics | Testing standards | |
| LT-A95SD | LT-A901D | ||
| Zinc oxide (ZnO) w/% ≥ | 95 | 92 | HG/T 4532-2013 |
| Drying loss w/% ≤ | 0.8 | 1.5 | |
| Water-soluble matter w/% ≤ | 0.4 | 0.4 | |
| Lead (Pb) w/% ≤ | 0.001 | 0.001 | |
| Mercury (Hg) w/% ≤ | 0.0003 | 0.0003 | |
| Cadmium (Cd) w/% ≤ | 0.0003 | 0.0003 | |
| Arsenic (As) w/% ≤ | 0.0003 | 0.0003 | |
| Average particle size by electron microscopy/nm ≤ | 50 | 50 | |
| Specific surface area / (m²) 2 /g） ≥ | 50 | 80 | |
Related products
Consult now
Address: Jiyuan Economic and Technological Development Zone, Henan Province
