On pouring, gloomy days, or when staying indoors all day, we often do not use sunscreen, thinking that without sunlight, the skin is safe. However, this is a classic visual ‘scam’ that causes the skin to be ravaged, pigmented, and age three times faster. In reality, neither thick clouds on the street nor glass windows at home can block the silent attack from UV rays. Join KIGO to uncover the truth about UV rays right below.

1. Why is the Skin Still Damaged on Rainy, Cloudy Days, or Indoors without Sun Exposure?

Most of us have a habit of ‘doing skincare based on the weather’, only applying sunscreen when the sun is blazing and not using it when it rains or gets cloudy. However, from a dermatological and scientific perspective, this is a classic mistake that causes the epidermal structure to be silently destroyed.

1.1 The Truth about UV Rays during Rain and Winter

• Rain and clouds only block UVB: Thick gray clouds or summer thunderstorms essentially only block most UVB rays – the short-wavelength rays that account for just 5% of the total UV radiation reaching the earth, causing surface sunburn and stinging. That is why on a rainy day, you feel the weather is cool and mistakenly think your skin is safe.
• UVA ‘pierces’ through all cloud layers: Unlike UVB, UVA rays make up 95% of total UV radiation and possess resilient long wavelengths. Whether it is pouring rain, heavily clouded, or freezing winter, the intensity of UVA rays remains almost unchanged. They silently pierce through cloud layers, reaching the basal layer of the epidermis to stimulate Melanin causing deep melasma, while simultaneously destroying the Collagen network, making the skin quickly sag and droop.

1.2 Why Do You Still Need Sunscreen Even When Just Indoors or in the Office?

• UVA penetrates glass windows: Do not think that sitting in a glass-windowed car, office, or at home means you can hide from the sun. Standard glass is completely powerless against the penetrating power of UVA rays. It steadily passes through glass doors to attack and ravage your skin throughout your 8-hour workday.
• The danger from blue light (HEV rays): When indoors or in the office, the skin is continuously exposed to computer screens, phones, TVs, and lighting systems. Blue light has high energy, capable of penetrating deep into the skin similarly to UV rays. They stimulate micro-inflammatory responses, generate free radicals that increase pigmentation, cause skin darkening, and accelerate the aging process.

1.3 The special optical reflection phenomenon on rainy days

• The prism reflecting UV rays: A physical phenomenon few people suspect is that raindrops remaining on leaves, road surfaces, or glass windows will act as convex lenses.
• Multiplying exposure intensity: When the weak light of a rainy day passes through these water droplets, they will be refracted and reflected back in multiple directions. This optical phenomenon inadvertently increases the area and intensity of UV ray exposure on the skin surface, making the skin twice as vulnerable without a protective shield.

2. How to Apply Sunscreen Scientifically Every Day

To maximize the protective power of sunscreen, application needs to strictly adhere to scientific standards from timing and dosage to the frequency of reapplication:

2.1 Application Time

• Apply in the morning, as the final step closing the skincare routine (after the moisturizer step) and always before the makeup step (if any).
• It is mandatory to apply sunscreen 15 – 20 minutes before going out so the active ingredients have enough time to establish a stable, even, and solid filter on the epidermal surface.

2.2 Proper Dosage

• The required dermatological standard is about 2mg of cream per 1cm² of skin.
• To easily quantify for the entire face, the standard amount of sunscreen will be equivalent to 1 coin or converted to 2 finger-lengths (the length from the base to the tip of the index and middle fingers).
• Applying too sparingly will cause the SPF and PA indexes to drop severely, losing the skin protection effect.

2.3 Reapplication Frequency (Re-apply)

• Under normal conditions (indoors, office): You should reapply the cream every 4 – 5 hours (about 1 – 2 times/day). Because naturally secreted excess oil and sweat will shift and patch the protective filter over time.
• When highly active (sweating, going to the beach, walking in the rain): The sunscreen layer will wash off very quickly. You must reapply the cream every 2 hours to ensure the skin has no loopholes for UV rays to attack.
• Tip when reapplying: Instead of having to remove makeup and reapply from scratch, which is very time-consuming, you can use a convenient sunscreen spray evenly over the face. The ultra-fine mist will quickly replenish the protective film, drying instantly without shifting the makeup layer or causing stickiness.

2.4 Skin Areas that Need Protection

Do not just focus on the face alone and forget other ‘age-revealing skin areas’. You need to pay attention to comprehensively protecting the neck area (where the skin structure is thin and highly prone to aging and sagging), the ear area, and the body skin when wearing short-sleeved outfits.

3. The KIGO Ecosystem – Comprehensive Sun Protection and Japanese-Standard Endogenous Recovery Solutions

Understanding the resilient nature of rainy-day UVA and office blue light, the KIGO ecosystem brings a comprehensive dual protection protocol: combining a high-tech external shield and internal cellular energy recovery.

3.1 Optimal External Protection with Premium Filter Technology from Ampleur

The premium brand Ampleur establishes an advanced broad-spectrum filter, providing an ultra-breathable texture, ideal for both rainy and sunny days:

• Ampleur Luxury White W Protect UV AQUA Sunscreen Cream SPF50+/PA++++: A water-rich gel broad-spectrum sunscreen masterpiece, extremely suitable for rainy weather or air-conditioned office environments. With a smooth texture as if applying a water film, the product absorbs instantly without causing stickiness or leaving white streaks. Not only blocking the attack of UVA, UVB, and blue light, this AQUA line is also rich in premium moisturizing ingredients, helping to nourish clear, soft, and vibrant skin all day long.

• Ampleur VC Sun Protect Spray SPF50+/PA++++: The optimal solution to easily follow the rule of reapplying sunscreen every few hours. The ultra-fine mist design evenly covers the entire body, containing a high-concentration Vitamin C complex to help neutralize free radicals generated by UV rays, creating an instantly dry and cooling sensation right upon spraying.

3.2 Strengthening the Self-Defense Barrier, Repairing Underlying Damage from Eikenbi

To completely block the root of dark spots and aging caused by long-wavelength rays, Eikenbi provides a powerful endogenous cellular energy recovery protocol:

• Lhamo Premium Omega-3 Krill Oil: Provides a high-quality Omega-3 fatty acid content extracted from Antarctic krill with outstanding bioavailability. The product acts as a powerful systemic anti-inflammatory, helping to extinguish micro-inflammatory reactions triggered by rainy-day UV rays under the epidermis, soothing damaged skin, and strengthening healthy cellular lipid membranes from deep within.

• Eikenbi Nano Fucoidan Turmeric Premium Liquid: A powerful, ultra-fast absorbing liquid purification and antioxidant solution. Applying ultra-fine Nano Curcumin technology helps thoroughly neutralize free radicals generated by office blue light and UV rays. The perfect combination with Fucoidan brown algae helps support liver detoxification, antibacterial action, protects the Collagen network from degradation, and accelerates the fading of dark spots, repairing underlying damage in the dermis.

4. Conclusion

Sun protection is not a task dependent on the weather forecast, but a mandatory skincare discipline that must be performed every day. Rain, winter, or staying indoors are just ‘visual illusions’ that deceive us, while UVA rays and blue light silently remain present and ravage our beauty hour by hour. Do not let subjectivity take away your youthful skin. Protect your skin smartly and consistently: establish a cutting-edge external shield from Ampleur and nourish resilient internal strength with Eikenbi at the KIGO ecosystem today to keep your beauty completely intact regardless of time.