Japanese beauty experts say Australians make one critical mistake with sunscreen application

In the sun-drenched land of Australia, whenever someone steps outdoors, the slogan “Slip, Slop, Slap”—meaning slip on a shirt, slop on sunscreen, and slap on a hat—echoes in their mind. For decades, sunscreen has been viewed in this country as an essential safety tool, given that it boasts the highest rates of skin cancer in the world. Two out of every three Australians undergo surgery for skin cancer at some point in their lifetime. Despite this, when Japanese beauty experts observe the sunscreen habits of Australians, they raise their eyebrows in bewilderment. According to them, Australians do indeed use sunscreen, but they fail to apply it correctly—and this constitutes a major, fundamental error that renders their skin protection woefully incomplete. This is not merely a piece of advice; it represents a deep-seated cultural and scientific understanding that has been passed down through generations in Japan.

In Japan, Sunscreen Is a Philosophy—Not Just a Product.

In Japan, sunscreen is regarded not merely as a cosmetic product but as a lifestyle. Japanese women—and men alike—apply sunscreen every single day, without exception, regardless of whether it is winter, cloudy, or raining. It serves as the final and most critical step in their skincare regimen. At the very root of the Japanese beauty philosophy lies a concept known as “Yobo” (予防)—meaning prevention. This philosophy dictates that rather than attempting to repair damage after it has occurred, one should proactively prevent it from happening in the first place. Guided by this mindset, the sun is viewed in Japan as the nemesis of beauty—an element that accelerates the formation of wrinkles and dark spots and hastens the skin’s aging process. Consequently, Japanese sunscreen formulations are designed to be exceptionally lightweight, transparent, and easy to spread across the skin—ensuring that people can apply them daily without any hesitation. In contrast, sunscreen in Australia is often applied only when heading to the beach or stepping out into intense sunlight. In the eyes of Japanese experts, this very mindset constitutes the first and most significant error.

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The “Critical Mistake” Japanese Experts Warn Against

Japanese and Korean sunscreens have gone viral worldwide over the past few years. When Australian YouTuber Hannah Price conducted a year-long comparison between Japanese and Australian sunscreens, her video garnered over 2.5 million views. She revealed that it was only after visiting Japan that she realized she didn’t actually hate sunscreen itself but rather the heavy, sticky texture of Japanese sunscreens. However, the most critical point to emerge from this entire debate was this: how to properly apply sunscreen. Cosmetic chemist Michelle Wong—known online as “Lab Muffin Beauty Science”—explicitly stated that people in Australia and other Western nations often purchase Asian sunscreens but apply them in the exact same manner as they would their old, thick Western sunscreens—and therein lies the biggest mistake. Japanese sunscreens are formulated to be lightweight and spread easily in smaller quantities; however, to achieve their stated SPF level, they must be applied using the correct amount and the proper technique.

The Secret of Quantity: How Little Is Too Little?

According to Japanese skincare experts, failing to use the correct amount of sunscreen is the most common—and most detrimental—mistake one can make. An adult requires approximately one shot glass’s worth of sunscreen to cover their entire body, while the face and neck require at least half a teaspoon. Japanese experts often refer to this as the “two-finger rule”—meaning, an amount of sunscreen equivalent to the length of two fingers should be used for the face. However, most Western consumers—Australians included—typically apply a significantly smaller amount than this. When you apply too little sunscreen, the SPF 50 rating printed on the bottle becomes practically meaningless; in reality, your skin may be receiving protection equivalent to SPF 20 or even less. Furthermore, in Japan, it is considered entirely standard practice to reapply sunscreen every two hours—particularly after sweating or swimming. This very discipline is the secret behind that radiant Japanese complexion so widely admired across the globe.

Why Reapplication Is Essential—And Why Australians Miss Out

The habit of applying sunscreen once and feeling worry-free for the rest of the day has become an integral part of the Australian lifestyle. One wakes up in the morning, applies sunscreen, and then spends the entire day outdoors—playing sports, sweating, and swimming in the ocean—without ever reapplying it. To Japanese beauty experts, this very notion is inconceivable. In their philosophy, the effectiveness of sunscreen diminishes over time—particularly after exposure to sunlight, heat, perspiration, and water. Consequently, in Japan, the use of umbrellas, the wearing of UV-protective clothing, and seeking shade during peak sun hours are considered just as essential as applying sunscreen itself. Japanese women are frequently seen carrying umbrellas during the summer—a practice that serves not as a fashion statement but as a practical protective measure. In stark contrast, Australians tend to view prolonged exposure to the open sun as an intrinsic part of their identity—even as their skin endures the highest levels of UV damage year after year.

The Qualities of Japanese Sunscreen Often Misunderstood in the West

Japanese sunscreens possess a distinct characteristic: they are incredibly lightweight, leave no white cast on the skin, and layer seamlessly under makeup. However, this very lightness sometimes leads Western consumers to believe that they might be “weaker” or insufficient for harsh climates like that of Australia. This perception is mistaken. Japanese sunscreens offer a high level of protection against not only UVB but also UVA rays—utilizing the PA++++ system to measure UVA protection, a factor often overlooked in Western countries. Furthermore, Japanese sunscreens contain advanced UV filters that sit exceptionally well on the skin. However, their benefits are realized only when applied in the correct quantity, using the proper technique, and at appropriate intervals. Unlike thick Western sunscreens, they should not be vigorously rubbed into the skin in a single motion; instead, they require a gentle, patting motion to settle properly onto the skin.

The Reality of SPF and Australia’s Sunscreen Scandal

While Japanese experts are raising questions regarding the proper application of sunscreen, a major issue has surfaced in Australia: false claims regarding SPF levels in sunscreens. When the Australian consumer organization CHOICE tested 20 popular sunscreen products—all of which claimed to offer SPF 50 or SPF 50+ protection—the results were shocking. Of these, 16 products failed to live up to their claims—meaning 80% of the products failed the test. Most startling was the revelation that Lean Screen SPF 50+ by the premium brand Ultra Violette tested at a mere SPF 4—making it less of a sunscreen and more of a tanning oil. This revelation sent shockwaves across Australia, prompting CHOICE to demand that the TGA (Therapeutic Goods Administration) conduct independent testing rather than relying solely on data provided by the manufacturers.

This issue, however, is not limited to Australia alone. Prior to this, in 2021, a major discrepancy regarding the SPF claims of a popular K-beauty sunscreen also came to light in Korea. Lawsuits have also been filed against several major brands in the United States. At the root of this issue lies a flawed testing system that is easily susceptible to manipulation. In SPF testing, sunscreen is applied to the skin of volunteers, who are then exposed to a UV lamp to observe how long it takes for their skin to turn red—a process that is not only complex but also heavily influenced by human subjectivity. Two different technicians may apply the same sunscreen differently, and results for the same product can vary between two different laboratories.

The Japanese Approach: Making Prevention a Part of Life

There is a common misconception regarding the Japanese beauty concept of “Bihaku” (美白)—that it represents a desire to whiten the skin. In reality, however, it signifies skin that is even-toned, radiant, and free of blemishes—a state that can only be achieved by preventing damage caused by the sun’s UV rays. In Japanese skincare routines, sunscreen serves as the final step, applied after all preceding products—cleansers, toners, essences, serums, and moisturizers. This ensures the skin is fully prepared to absorb the sunscreen as its outermost protective layer. It is a systematic, disciplined, and scientific approach that stands in stark contrast to the Western “slap it on and go” mentality.

Japanese skincare experts adhere to the principle of applying the lightest-consistency products first, followed by the thicker ones. Consequently, sunscreen—being a relatively thick product—is applied at the very end. Furthermore, there is a tradition in Japan of adjusting one’s skincare routine according to the season—incorporating more hydrating layers in winter and lighter textures in summer. However, sunscreen remains an indispensable part of the routine in every season.

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What Should the Average Australian Consumer Do Now?

Amidst this entire situation, experts have a clear message: do not panic, but certainly remain vigilant. First and foremost, do not throw away your sunscreen. Even if a sunscreen provides an SPF of 20 instead of 50, it is still far better than using no sunscreen at all. Secondly, apply the correct amount—at least half a teaspoon for the face, and a generous amount for the body. Thirdly, reapply every two hours—especially if you are sweating or are in the water. Fourthly, do not rely on sunscreen as your sole form of protection; protective clothing, wide-brimmed hats, sunglasses, and seeking shade during the harsh midday sun are equally important. Fifthly, if you choose to use Japanese sunscreen, apply it the Japanese way—rather than with an old-school Western mindset.

Conclusion: Applying Sunscreen Is Not Enough; Applying It Correctly Is Essential

This message from Japanese beauty experts is directed not only at Australians but also at anyone who believes that simply purchasing a bottle of sunscreen guarantees the protection of their skin. Sunscreen application is a science; it must be applied in the correct amount, in the proper sequence, at the right time, and reapplied at regular intervals. Japan has learned this lesson through the convergence of centuries-old tradition and modern science. That remarkable radiance of their skin—known as “Mochi Hada” (meaning skin that is soft, supple, and luminous like a rice cake)—does not appear overnight. It is the result of years of disciplined care, an emphasis on prevention, and the practice of treating sunscreen application as a serious daily ritual.

The people of Australia—a region exposed to some of the world’s most intense UV radiation—have the most to learn from this philosophy. If you place your trust in SPF labels, ensure that you are applying the correct amount to actually achieve that level of protection. And if you are purchasing Japanese sunscreen, be sure to apply it the Japanese way. And if you truly want to protect your skin for the long term, add one more step alongside “Slip, Slop, Slap”—”Reapply. ” That is the real message from Japanese experts.

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