Protecting our skin from the sun has become essential, not just during the summer, but year-round. The harmful effects of solar radiation are increasingly clear, and photoaging, sunspots, burns, and serious illnesses like skin cancer have made the daily use of sunscreen a real necessity, not just a passing fad.
Although many questions remain about which sunscreen is best, how to choose the most suitable one for our skin type, and how to apply it, the reality is that the range and quality of these products are constantly evolving. That's why we've prepared a detailed and practical guide that incorporates all the recommendations and key information from experts and leading websites specializing in sun protection. Here you'll find everything you need to know to make an informed choice and care for your skin as it deserves.
Why is it so important to use sunscreen daily?
80% of the signs of skin aging are a consequence of external factors linked to the so-called exposome, where ultraviolet radiation plays a major role. This type of radiation not only damages the skin's surface layers but can also alter cellular DNA, causing wrinkles, age spots, loss of elasticity, and increasing the risk of skin cancer.
Therefore, The key to maintaining youthful and healthy skin is consistent sun protection.This happens on sunny days as well as cloudy ones, and not just in summer, but also during winter. The face, neck, hands, and other exposed areas accumulate damage from daily sun exposure without us even realizing it.
In addition to preventing aging, the use of sunscreens significantly reduces the occurrence of burns, erythema, sun allergies and minimizes the risk of developing skin cancer.
Basic principles: What does SPF mean and how to choose the right one?
El SPF or Sun Protection Factor (also known by its acronym in English) is the number that indicates how much longer you can be exposed to the sun without getting burned compared to not using protection. For example, if your skin reddens after 10 minutes of unprotected sun exposure, with SPF 30 you could theoretically be protected for 300 minutes, although factors such as sweating, swimming, or proper application can affect this calculation.
Experts and dermatologists insist that the minimum recommended SPF is 30.However, for fair, delicate, or sensitive skin, it's always advisable to choose SPF 50 or 50+. Different skin phototypes also play a role:
- Phototypes I, II, III: Very fair skin that burns easily; always use SPF 50+.
- Phototypes IV, V, VI: darker skin; SPF 30 minimum.
Therefore, It's not just a matter of skin tone, but also of the environment, the time of year, and your specific needs.And don't forget that sunscreen should be reapplied periodically (every two hours or after bathing/sweating) to maintain its effectiveness.
Physical or chemical sunscreens: what's the difference?
One of the biggest dilemmas when choosing a sunscreen is its composition.
- Sunscreens with chemical filters: They contain molecules that absorb ultraviolet radiation and transform it into harmless energy. They are usually more pleasant to the touch, absorb well, and are ideal for those seeking lightweight textures or who want to wear makeup over them. However, they can take 20-30 minutes to become effective after application and, in rare cases, may cause allergic reactions in highly sensitive skin.
- Sunscreens with physical or mineral filters: They act as a shield that reflects sunlight (UVB and UVA) and prevents radiation from passing through. They are especially recommended for sensitive, atopic, or easily irritated skin, since They minimize the risk of allergies and usually protect against a wider range of radiation.Common ingredients in these filters are titanium dioxide and zinc oxide.
The choice between one or the other depends on your preferences, needs, and skin type, but the most important thing is that they provide broad-spectrum protection, that is, against UVA and UVBCurrently, many formulas combine both types of filters to offer maximum effectiveness.
Face Sunscreen vs. Body Sunscreen
Within the universe of sunscreens, it is essential to distinguish between those formulated specifically for the face and those indicated for the body. Facial skin is usually more sensitive, thinner, and prone to blemishes or imperfections.Therefore, facial sunscreens tend to have specific ingredients to prevent shine, control excess oil, deeply hydrate, and offer ultra-light textures that do not clog pores.
Body sunscreens, on the other hand, can have denser textures, resistant to water, sweat and friction, to guarantee protection even in bathing situations or outdoor sports practice.
How much sunscreen is ideal?
Often, protection is ineffective simply because the amount applied is insufficient. Specialists recommend Use at least 30 ml of product for the whole body (the equivalent of a shot glass or two tablespoons). For the face, the famous two-finger rule is very useful: put two lines of sunscreen on your index and middle fingers and spread it all over your face, neck and ears.
In the case of spray formats, you need about 60 pumps to cover the entire body, while for mists it would be 10 seconds of spraying per area from about 10 cm away. If you use a stick, Make sure to pass it over each area at least seven times..
How and when should we apply sunscreen?
Proper application is just as fundamental as choosing a good product. We should apply sunscreen approximately 30 minutes before sun exposure. so that the skin can properly absorb the filters – especially the chemical ones – and thus they can have their effect.
Don't forget to use it on all exposed areas: face, ears, neck, back of the neck, hands, and also on your feet if you're going to wear sandals or walk barefoot. Reapply every two hours or after bathing, toweling off, or heavy sweating. More sensitive areas such as lips, eyelids, scars, tattoos, and blemishes require special attention and adapted products (for example, special sticks).
Does SPF 50 prevent tanning? Common questions
There is a common misconception that sunscreen with a high SPF prevents tanning. Nothing could be further from the truth. The sunscreen protects against damage but allows the skin to gradually acquire a much healthier tone.preventing oxidative damage and ensuring a long-lasting, even tan.
Practical tips for choosing the best sunscreen for you
- Evaluate your skin type: Dry, combination, oily, reactive, or blemished. Look for suitable formulas: oil-free if you're prone to acne, or nourishing if your skin is dry.
- Consider your habits and environment: If you are an athlete, bathe frequently, or sweat, opt for water and sweat resistant formulas.
- Check the expiry date: Sunscreen loses effectiveness after 12 months of being opened. Never use the same bottle from one summer to the next.
- Check the UV index intensity: It is useful to assess daily solar radiation (1 to 3 is low, 4 to 6 is medium, 7 to 9 is high, and more than 10 is very high) and adjust protection accordingly.
The most recommended sunscreens of 2025
The range of sunscreens is becoming increasingly varied. Specialized magazines, pharmacies, and independent comparison websites have highlighted a number of products that combine quality, effectiveness, and very good customer reviews. Below is a selection of the most outstanding ones for different skin types and situations:
- Isdin Fusion Water Magic SPF 50: This facial sunscreen offers full-spectrum protection (UVB/UVA, blue light, infrared radiation, and pollution) with an ultra-light, water-based texture. It is hypoallergenic, non-greasy, and recommended even for sensitive or acne-prone skin.
- Waterlover Hyd Sunscreen from Biotherum: A great option for those seeking environmental respect and high protection, especially on beaches.
- Delial Ideal Bronze Protective Mist SPF 50 by Garnier: It protects and evens out skin tone, as well as drying quickly and being water resistant.
- Ecran Silky Touch Body Sunscreen: It provides hydration, protects against sun damage and leaves skin silky smooth.
- Nivea Protect & Hydrate Sun Milk: It contains vitamin E, protects against UVA/UVB rays, and prevents premature aging.
- Heliocare 360º Oil-Free Gel SPF 50 from Cantabria Labs: Light texture, protection against all four types of radiation and antioxidants.
- Singuladerm XPERTSUN Urban SPF 50+: It stands out for its cellular repair action and defense against free radicals.
- Bella Aurora Anti-Dark Spot Facial Cream SPF 50+: It combines protection with depigmenting ingredients, ideal for skin prone to blemishes.
- La Roche-Posay Anthelios Ultra-light Mineral: Very fluid and mattifying formula, perfect for sensitive skin.
- Rilastil Sun System Stick SPF 50+: Targeted protection for sensitive areas with a transparent formula.
- Avène Sunscreen Milk SPF 50+: Excellent reviews for children's and sensitive skin protectors.
Brands like Caudalie, ISDIN or Bioderma are also among the most recommended for stick or mist formats, and there are very interesting options in sports sunscreens (Decathlon) or for atopic skin (Instituto Español, Heliocare Pigment Solution Fluid SPF 50+).
Consequences of not using sunscreen and how to prevent them
The sun can cause unwanted effects if protection isn't used, especially on the face. The accumulation of sun damage is behind:
- Sunburn, redness and dehydration
- Premature aging and the appearance of wrinkles and sagging skin
- Sun spots and hyperpigmentation
- Imbalances and outbreaks in sensitive, acne-prone or rosacea-affected skin
- Increased risk of skin cancer
That's why experts insist that The best prevention is a good sunscreen, complemented by habits such as avoiding sun exposure during the middle of the day, wearing sunglasses, a hat, and light clothing. And don't forget internal hydration by drinking water regularly.
It is essential to remember that small daily gestures contribute to keeping skin protected, young and healthy in the long term.