Critical Wavelength Test in Sunscreen

Although the use of sunscreens or sunscreen cosmetics increases during the summer months, daily use is actually recommended. The first aim is to prevent our skin from being damaged, especially in the UVA and UVB rays that we are exposed to with the sun. When buying sunscreen products, some information that must be on the label should be read carefully:

• How much sunscreen should be used
• How often should sunscreen be used?
• How long does sunscreen protect?
• Whether the sunscreen is suitable for use on children or babies
• How long should it be stored for stability?
• The effectiveness of sunscreen

Sunscreens go through many tests in order to determine the points to be considered above. One of these tests is the "Critical Wavelength Test". The critical wavelength refers to the wavelength in the portion under the integrated optical density curve starting from 290 nm, equal to 90% of the integrated portion between 290-400 nm wavelengths.

You can contact the Nanolab Cosmetic Analysis Laboratory for the "Critical Wavelength Test" performed in-vitro.

CLICK HERE FOR COSMETIC PRODUCT ANALYSIS.