Mermaid Skin Gel UV Clear SPF 50+

Canmake is a Japanese drugstore makeup company, not a skincare brand. It has made affordable cosmetics since 1985, using IDA Laboratories’ century-old heritage. When the Mermaid Skin Gel UV launched in 2018 and became a global internet sensation, it was both surprising and logical. A makeup brand understands that wearability, not efficacy, is the main barrier to daily sunscreen use. If sunscreen feels like skincare and looks like a filter, people use it. Canmake built exactly that.

The texture is the first thing you notice, because there is almost nothing to notice. It is a clear, water-weight gel that glides on like a hydrating serum. It absorbs into bare skin within seconds, leaving a luminous, dewy glow. There is no white cast. None. Even with zinc oxide and titanium dioxide as mineral filters, the formula is invisible, unlike most mineral sunscreens. On the skin, it looks like a good moisturizer. The ‘mermaid skin’ name fits; it provides the aquatic, glass-skin luminosity found in Korean and Japanese beauty aesthetics.

The UV filter architecture is sophisticated for a budget product. This hybrid formula uses five UV filters: octinoxate (UVB), Tinosorb A2B and Tinosorb S (broad UVA/UVB), zinc oxide (broad spectrum), and titanium dioxide (UVB/UVA-II). The two Tinosorb filters stand out. They are among the most photostable, effective modern UV absorbers, usually found in premium European sunscreens from brands like La Roche-Posay. Finding them in a $12 Japanese drugstore product is remarkable. Tinosorb S also stabilizes the UV filters, preventing the octinoxate from degrading in sunlight—a common weakness in octinoxate-only formulas.

Beyond UV filters, the formula includes skincare ingredients that add multi-tasking benefits. Sodium hyaluronate provides humectant hydration. Glucosyl ceramide supports barrier function. Jojoba esters condition the skin. Botanical extracts—cherry blossom, artichoke, mulberry, and blueberry leaf—add antioxidant protection. These ingredients are not just label decoration; they make the product comfortable and leave skin looking better, not just protected.

Now for the honest part. Independent UV testing questions this sunscreen’s real-world protection. One widely cited test found actual UVA and UVB reduction was significantly lower than the SPF 50+ PA++++ rating. The reason lies in the product’s design. To achieve this cosmetic elegance—the water-like texture, invisible finish, and zero white cast—the formula sacrifices the thick, film-forming properties that make sunscreens durable. The UV filters reach the lab rating under controlled conditions, but the thin film is more vulnerable to disruption from touch, sweat, and environmental exposure than heavier formulations.

This does not make the Mermaid Skin Gel UV worthless. It is a specific tool for a specific purpose. For daily commuting, indoor office work, and brief outdoor exposure—most people’s actual daily sun exposure—it provides meaningful protection in a wearable package. For extended outdoor time, sports, beach days, or high-UV environments, it should not be your primary sunscreen. The lack of a water or sweat resistance rating underscores this.

Octinoxate deserves mention. It is a controversial UV filter—effective for UVB absorption but less photostable than newer options, and banned in Hawaii and Palau due to coral reef toxicity concerns. Canmake uses Tinosorb S to stabilize the octinoxate, addressing photostability, but the environmental impact remains for eco-conscious users.

The 40-gram tube is standard for Japanese sunscreens but feels small when applying the dermatologist-recommended 1/4 teaspoon for the face. At proper application volume, one tube lasts roughly three to four weeks of daily facial use. This means the annual cost is approximately $150-$180, which is moderate for a daily sunscreen but adds up. The per-gram price is excellent compared to European sunscreens with similar filter technology.

As a makeup primer, the Mermaid Skin Gel UV is outstanding. The dewy, smoothing finish creates an ideal base for foundation. Many users wear it as their only base product for a natural, luminous look. This dual functionality shows the product’s makeup-brand heritage—Canmake knows that for many, sunscreen’s main competitor is the desire to skip the step entirely.

The Canmake Mermaid Skin Gel UV is like a beautiful sports car that performs poorly in bad weather. It does the glamorous part better than almost anything on the market. The dewy glow, invisible texture, and skincare-meets-makeup experience are exceptional. But if you need serious, all-conditions protection, this is your everyday car, not your storm-chaser. Know what it is, use it for its strengths, and keep a more robust sunscreen in your bag for days that demand it.

Formula