2025.05.10

Balancing UV Protection & Vitamin D Supplementation! What Is This Innovative Sunscreen Born in the UV Haven of Australia?

#SolarD

#sunscreen

#UV protection

#UV cut

#vitamin D

#beauty

#skincare

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Since contributing to the maintenance of immune function, vitamin D has gained attention in the wake of the COVID-19 pandemic.

The sunscreen that focuses on this vitamin D, coming from UV-rich Australia, is "solarD."

What kind of nutrient is vitamin D? How is SolarD different from regular sunscreens? We talked with Keiko Shiga from Ambrosia K.K.

PROFILE

Keiko Shiga

Representative Director of Ambrosia K.K.

Started a business conducting various tests including delayed-type food allergies in 2008. Also operates "Ambrosia Marché," which deals with body-friendly organic ingredients.

Various Actions of Vitamin D, Including Bone & Immune Function

Vitamin D, which is a type of fat-soluble vitamin, is also surprisingly known to be a type of hormone.

"Hormones are substances produced in the body that act on organs through the bloodstream. Vitamin D can be supplemented through food and supplements, but it can also be produced in the body by sunlight, acting on organs as well."

The appropriate range of vitamin D levels varies somewhat by testing institutions, but a typical blood concentration is considered to be 30–75ng/mL.

So, what kind of actions does vitamin D have?

"The main actions include the formation of bones and teeth, muscle contraction, nerve transmission, and regulation of immune function. In recent years, there has been a lot of research on vitamin D globally, and various papers have been published.