Sun protection is the single most impactful step in any skincare routine. In Spain, with high UV radiation for much of the year, cumulative exposure causes photodamage, accelerates ageing and increases skin cancer risk — and yet many people still protect themselves less than they need to.
UV Radiation in Spain
UVB (280-315 nm)
Responsible for sunburn (erythema) and the primary driver of skin cancer. Its intensity varies significantly by season, latitude and time of day. In Spain, it reaches very high UV indices from spring to autumn, with peak levels between 12:00 and 17:00.
UVA (315-400 nm)
Penetrates deeper into the dermis, causing the majority of photoageing (wrinkles, dark spots, collagen degradation). Its intensity is relatively constant year-round and it passes through clouds and glass. This is why daily SPF is necessary in winter too.
Blue Light (HEV, 400-450 nm)
Emerging research suggests that high-energy visible light from screens and artificial lighting may contribute to hyperpigmentation, particularly in darker skin types. While the evidence is less robust than for UV radiation, broad-spectrum protection that includes HEV coverage provides additional benefit.
SPF Explained
SPF (Sun Protection Factor) measures UVB protection only:
- SPF 30: blocks 97% of UVB radiation
- SPF 50: blocks 98% of UVB radiation
- SPF 50+: blocks 98.5% or more of UVB radiation
The difference between SPF 30 and 50 may seem small, but for patients with photosensitive conditions, freshly treated skin, or those using photosensitising actives (retinoids, AHAs), SPF 50 provides a meaningful additional margin of protection.
UVA Protection
In the European Union, look for:
- The circled UVA logo: indicates that UVA protection is at least one third of the stated SPF, in line with the European recommendation
- The "broad-spectrum" label: indicates UVA protection proportional to UVB
- PA++++: the Japanese system indicating the highest UVA protection
Medical-Grade vs Consumer Sunscreens
Medical-grade sun protection offers several advantages:
- Stable formulations: UV filters remain effective longer and resist photodegradation
- Pleasant textures: no white cast, and lightweight finishes that encourage daily use
- Added actives: combined with antioxidants, DNA repair enzymes or barrier-supporting ingredients
- Suitable after procedures: formulated to be non-irritating on compromised skin
Fotoskinox SPF 50 combines broad-spectrum UV protection with antioxidant and skin-care actives, making it suitable as the final step in a medical-grade routine and for post-procedure protection.
SPF Application: The Rules
- Quantity: 2 mg/cm² is the testing standard. For the face alone, this equals approximately 1/4 teaspoon or two finger-length strips. Most people apply only 25-50% of the required amount
- Timing: apply as the final step of your routine, before make-up, 10-15 minutes before sun exposure
- Reapplication: every 2 hours during continuous sun exposure and immediately after swimming or sweating. For indoor workers, the morning application protects during the commute and incidental exposure
- All year round: UVA passes through clouds and glass. Daily application is recommended in every season
SPF in Professional Protocols
For aesthetic professionals, sun protection is essential in every treatment plan:
Post-Procedure SPF
- After a chemical peel: mineral filters preferred for 7-14 days (less irritating than chemical filters)
- After mesotherapy and microneedling: SPF 50 from 24 hours after treatment
- After laser: strict SPF 50+ for at least 4-6 weeks to prevent PIH
- After an exosome treatment: SPF 50 to protect regenerating tissue
Retinoid Users
All patients using retinol or retinal must use SPF 50 daily. Retinoids thin the stratum corneum and increase photosensitivity. SPF compliance is the most important factor in preventing associated complications.
Patients with Hyperpigmentation
UV exposure is the main trigger and aggravator of melasma and PIH. Strict daily SPF 50+ is part of the treatment, not just protection. Consider tinted formulations for additional protection against visible light.
The Skymedic Sun Protection Range
- Fotoskinox Cream SPF 50: lightweight daily protection for all skin types
- Fotoskinox SPF 50 Color: tinted formula with additional visible light protection, ideal for melasma
- Fotoskinox Hydrabody SPF 50: body sunscreen with hydrating properties
- Fotoskinox Sun Kit: complete sun protection system
- Fotoskinox oral supplement: antioxidant support that complements topical photoprotection
Frequently Asked Questions
Do I need SPF in winter?
Yes. UVA radiation is present year-round and passes through clouds. If you are using actives (retinoids, AHAs, vitamin C) or treating pigmentation, daily SPF is essential in every season. If you work mainly indoors with little window exposure, a single morning application is usually sufficient.
Chemical or mineral sunscreen: which is better?
Both are effective when properly formulated. Chemical filters offer more pleasant textures and better UVA protection. Mineral filters (zinc oxide, titanium dioxide) are better tolerated by sensitive and post-procedure skin. Medical-grade formulations often combine both for optimal protection and cosmetic elegance.
Can SPF replace my moisturiser?
SPF products with added moisturising actives can serve both functions for some skin types. However, for dry or barrier-compromised skin, applying a moisturiser under SPF provides more hydration and barrier support.
