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Kaolin clay is a natural mineral that has been used for centuries for its medicinal and cosmetic benefits. In recent years, it has gained attention for its ability to increase UV protection in natural sunscreens. When combined with zinc oxide, kaolin clay can enhance the SPF (Sun Protection Factor) of mineral-based sunscreens. In this blog post, we will explore how kaolin clay increases the UV protection of natural mineral-based sunscreens and the scientific evidence supporting its use.
What is Kaolin Clay?
Kaolin clay is a type of clay that is rich in minerals such as silicon, magnesium, and calcium. It has a high refractive index, which means that it reflects light away from the skin. This property of kaolin clay makes it an excellent ingredient in natural sunscreens, as it can help to prevent UV rays from penetrating the skin. When added to mineral-based sunscreens, kaolin clay can enhance their UV protection by reflecting more UV rays away from the skin.
The Benefits of Combining Kaolin Clay with Zinc Oxide
Zinc oxide is a mineral that is commonly used in natural sunscreens due to its ability to provide broad-spectrum UV protection. When combined with kaolin clay, zinc oxide can increase the SPF of natural sunscreens. A study published in the Journal of Cosmetic Science found that the addition of kaolin clay to a sunscreen formulation containing zinc oxide increased the SPF value. This increase in SPF was attributed to the reflective properties of kaolin clay, which helped to enhance the effectiveness of zinc oxide in blocking UV rays.
More Researching Points to Kaolin Clay Increasing UV Protection
Another study published in the Journal of Photochemistry and Photobiology found that the addition of kaolin clay to a sunscreen formulation containing titanium dioxide (another mineral used for UV protection) increased the protection against UVA radiation. The researchers concluded that the combination of kaolin clay and titanium dioxide provided superior UVA protection compared to titanium dioxide alone.
Additional Benefits of Kaolin Clay
In addition to its UV-protective properties, kaolin clay has other benefits for the skin. It is a gentle ingredient that can help to soothe and calm the skin, making it a great choice for people with sensitive skin. It also has anti-inflammatory properties, which can help to reduce redness and inflammation caused by sun exposure.
Summary of Findings
Studies show that adding kaolin clay to sunscreen formulations significantly boosts SPF coverage.
Increased SPF:
Kaolin clay, combined with zinc oxide, raises SPF due to its high refractive index.
It reflects more UV rays away from the skin, enhancing zinc oxide's effectiveness.
Improved UVA Protection:
Mixing kaolin clay with UV-blocking minerals like zinc oxide and titanium dioxide provides superior UVA protection.
It offers better coverage compared to titanium dioxide alone.
Enhanced Thickness and Stability:
Kaolin clay increases the thickness and stability of the sunscreen film.
This makes the sunscreen more durable and water-resistant.
Consistent Protection:
The sunscreen stays on better, offering more consistent protection.
Maintained Stability and Aesthetics:
Formulations with kaolin clay help maintain the stability and aesthetics of the sunscreen.
Ensures the sunscreen remains effective and pleasant to use.
Overall Benefit:
Kaolin clay significantly enhances the protective capabilities of sunscreens.
When shopping for natural sunscreens, look for products that contain kaolin clay as an ingredient for optimal UV protection.
Shop The Top Sunscreen with Kaolin Clay (Organic Mineral Sunscreen Stick with Kaolin Clay & Niacinamide)
Sources:
For more information, check out our latest blog posts and product reviews, and stay updated with our skincare tips and news, check out our Ocean Friendly products, including our Organic SPF Lip Balm and Sunscreen Stick with Kaolin Clay and Niacinamide, for sustainable and effective sun protection. Ethically sourced and organic ingredients - like 100% pure Canadian beeswax, non-nano zinc oxide, organic caster oil, kaolin clay, organic shea butter, organic cocoa butter, organic green tea extract, niacinamide and vitamin E oil - not only shield your skin from harmful UV rays but also nourish and enhance skin health.
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