How to choose sunscreen?

When choosing sunscreen, you need to comprehensively consider the sun protection index (SPF/PA), ingredient safety, skin compatibility, and usage scenarios.Core takeaways include:SPF value(anti-UVB) andPA level(UVA protection) choice, the difference between physical sunscreen and chemical sunscreen, the special needs of sensitive or acne-prone skin, and waterproof and sweatproof performance.Secondary factors such as texture (lotion, spray, etc.), brand reputation and cost-effectiveness also need to be weighed.

SPF and protection rangeis the primary focus.SPF30+/PA+++ is available for daily commuting, and SPF50+/PA++++ is recommended for outdoor activities.Physical sunscreens (containing zinc oxide and titanium dioxide) are suitable for sensitive skin, while chemical sunscreens (such as avobenzone) feel lighter on the skin.Be careful to avoid irritating ingredients containing alcohol and fragrance. Children or pregnant women should choose specially formulated formulas.

Skin compatibilityDirectly affects the user experience.For oily skin, we recommend a chemical sunscreen or a combination of physical and chemical sunscreen with a refreshing texture (such as Shiseido Blue Fatty). For dry skin, you can choose an emulsion type containing moisturizing ingredients (hyaluronic acid) (such as Kerun Moisturizing Sunscreen).Acne-prone skin needs to avoid acne-causing ingredients (such as isopropyl palmitate), and sensitive skin prefers formulas without additives (such as Fancl sunscreen isolation lotion).

Usage scenarios and additional functionsRefine your selection further.For swimming or sports, you need a waterproof sunscreen (Anai Sunscreen). For daily use, you can use a sunscreen that can be removed with ordinary cleansing (Biore Water-based Sunscreen).If you need to wear makeup, you can consider a sunscreen with a touch-up effect (CPB Age-Resistant Sunscreen Lotion).Pay attention to the frequency of reapplying, once every 2-3 hours is more effective.

Taken together,ideal sunscreenProtection, safety and ease of use should be balanced.It is recommended to try a sample first to avoid allergies and to use hard sunscreen (hat, sunglasses) to enhance the effect.Adjust products according to the seasons, choose high-power waterproof models in summer, and focus on moisturizing models in winter.Regularly check the shelf life after opening to ensure the effectiveness of the active sunscreen ingredients.

Quote sources:
1. American Academy of Dermatology (AAD) Sun Protection Guidelines
2. Japan Cosmetics Industry Association (JCIA) sun protection standards
3. Official ingredient descriptions of Shiseido, L’Oréal Group and other brands
4. Dermatologist Dr. Leslie Baumann's "Research on the Safety of Sunscreen Ingredients"