Canmake is not a skincare brand. It is a Japanese drugstore makeup company that has been making affordable cosmetics since 1985, rooted in IDA Laboratories' century-old heritage. So when the Mermaid Skin Gel UV launched in 2018 and became one of the most discussed sunscreens on the global internet, it was both surprising and perfectly logical. Of course a makeup brand would understand that the biggest barrier to daily sunscreen use is not efficacy — it is wearability. If sunscreen felt like skincare and looked like a filter, people would actually use it. That is exactly what Canmake built.
The first thing you notice is the texture, because there is almost nothing to notice. It is a clear, almost water-weight gel that glides across the face with the resistance of a hydrating serum. Within seconds, it absorbs into what feels like bare skin with a luminous, dewy glow. There is no white cast. None. Despite containing both zinc oxide and titanium dioxide as mineral filters, the formula achieves the kind of invisibility that most mineral sunscreens can only dream of. On the skin, it looks like you just applied a very good moisturizer. The 'mermaid skin' name is earned — it is that aquatic, glass-skin luminosity that Korean and Japanese beauty aesthetics prize.
The UV filter architecture is genuinely sophisticated for a budget product. This is a hybrid formula combining 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 are the standouts — they are among the most photostable and effective modern UV absorbers, typically found in premium European sunscreens from brands like La Roche-Posay. Getting them in a $12 Japanese drugstore product is remarkable. Tinosorb S additionally functions as a UV filter stabilizer, preventing the octinoxate from degrading under sunlight — a common weakness of octinoxate-only formulations.
Beyond the UV filters, the formula includes a supporting cast of skincare ingredients that transforms this from protection into genuine multi-tasking. Sodium hyaluronate provides humectant hydration. Glucosyl ceramide supports barrier function. Jojoba esters condition the skin. A collection of botanical extracts — cherry blossom, artichoke, mulberry, blueberry leaf — adds antioxidant protection. These are not just label decoration; they contribute to the remarkably comfortable wearing experience and the product's ability to leave skin looking better, not just protected.
Now for the honest part. Independent UV testing has raised questions about this sunscreen's real-world protection. One widely cited test found that the actual UVA and UVB reduction was significantly lower than the SPF 50+ PA++++ rating would suggest. The likely reason is inherent to the product's design philosophy. To achieve this level of cosmetic elegance — the water-like texture, the invisible finish, the zero white cast — the formula sacrifices the thick, film-forming properties that make sunscreens durable on the skin. The UV filters are present in sufficient concentrations to achieve the lab rating under controlled conditions, but the thin film they form may be more vulnerable to disruption from touch, sweat, and environmental exposure than heavier formulations.
This does not make the Mermaid Skin Gel UV worthless. It makes it a specific tool for a specific purpose. For daily commuting, indoor office work, and brief outdoor exposure — the situations that constitute most people's actual daily sun exposure — it provides meaningful protection in the most wearable package possible. For extended outdoor time, sports, beach days, or high-UV environments, it should not be your primary sunscreen. The absence of any water or sweat resistance rating underscores this limitation.
Octinoxate deserves a mention. It is a controversial UV filter — effective for UVB absorption but less photostable than newer alternatives, and banned in Hawaii and Palau due to concerns about coral reef toxicity. Canmake uses Tinosorb S to stabilize the octinoxate in this formula, which addresses the photostability concern, but the environmental consideration remains for eco-conscious users.
The 40-gram tube is standard for Japanese sunscreens but feels small when you apply at the dermatologist-recommended amount of 1/4 teaspoon for the face. At proper application volume, a tube lasts roughly three to four weeks of daily facial use — meaning 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, and many users report wearing it as their only base product for a natural, luminous look. This dual functionality is where the product's makeup-brand heritage shines through — Canmake understands that for many consumers, sunscreen's primary competitor is not other sunscreens but the desire to skip the step entirely.
The Canmake Mermaid Skin Gel UV is the sunscreen equivalent of a beautiful sports car that is not great in bad weather. It does the glamorous part better than almost anything on the market. The dewy glow, the invisible texture, the skincare-meets-makeup experience — it is genuinely 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 what it does best, and keep a more robust sunscreen in your bag for the days that demand it.
