Dr. Jane Yoo breaks down two Sekkisei sunscreens: the UV Defense Essence Gel and Milk, both SPF 50+ PA++++. The gel uses zinc oxide, Tinosorb S, and octisalate; the milk swaps in Uvinul T150. Both pack Job's Tears extract for hydration and brightening, plus a flexible polymer for a smooth finish.
Hi everyone, I'm Dr. Jane Yoo, board-certified dermatologist and Mohs surgeon. While I was in Japan for the Tokyo Marathon, I also picked up some products from Sekkisei, a Japanese skincare brand under KOSI Corporation that has been around since 1985. Sekkisei's philosophy is rooted in blending ancient Asian herbal medicine with modern Japanese scientific research, and their formulas are consistently built around botanical ingredients particularly herbs known for their brightening and hydrating properties. Their sunscreens carry that same identity forward. The Sekkisei Skincare UV Defense Essence Gel N SPF 50+ PA++++ is a lightweight, refreshing gel texture that absorbs instantly without any stickiness, thanks to a flexible polymer that traps moisture and forms a light, breathable layer on the skin. The filter system includes zinc oxide for broad UVA and UVB coverage, Tinosorb S for both UVA and UVB, octisalate and Parsol SLX for UVB, and Uvinul A Plus for additional UVA protection. On the skincare side, it features 3 forms of Job's Tears, a green plant native to Asia, also known as harumugi in Japanese, that has long been used in traditional herbal medicine for its deeply hydrating and skin brightening properties. Here it appears as domestic extract, fermented extract, and Job's Tears water, which together work to deeply hydrate and contribute a translucent, radiant complexion. A translucent powder also gives the skin an immediate luminous finish on application. The Sekkisei Skincare UV Defense Essence Milk N SPF 50+ PA++++ shares the same herbal skincare philosophy in a silky sticky, airy milk texture. A unique light-dissolving oil gives it a smooth, non-heavy feel that sinks in seamlessly. The filter lineup here includes zinc oxide, Parsol SLX, Uvinul T150, Uvinul A+, and Titerzorb S, and some sources also list octisalate for additional UVB coverage. Like the gel, it features the same trio of Job's Tears extracts for their hydrating and brightening benefits and its stretchable protective film keeps the sunscreen in place even during physical activity without bunching or breaking down. Both formulas reflect Sekkisei's commitment to marrying effective science with thoughtful, botanically grounded skincare.
