Dr. Ana Revuelta on Combining Vitamin C and Sunscreen: Superior Protection Against Photoaging

Emma Caldwell
August 29, 2026

The world of beauty is advancing by leaps and bounds, and every day new formulas, actives, ingredients and combinations appear aimed at improving the skin’s condition, fighting the signs of aging, and finding the best way to repair the negative consequences of the multitude of external factors we face in our daily lives.

However, despite all the science, innovations in Korean cosmetics and new launches, in recent years we could say that both sun protection and vitamin C have become key and a common denominator in almost all beauty routines.

These two lines of treatment present themselves as those essentials you should not renounce at any time of the year and that work well on all skin types and at all ages. A combination of factors, ingredients and products that are among the most favorable and that day after day experts recommend.

The latest example is Dr. Ana Revuelta, who has wanted to talk about that cosmetic trend and defend all the benefits of using vitamin C in the morning as the best urban shield to protect the skin from summer photoaging.


The RoC Revive + Glow Serum (39.90 euros) and The Milky Sunscreen by Tatcha (55 euros).

And indeed Ana Revuelta Alonso, a pharmacist and aesthetic physician, has wanted to speak especially about minimalism when it comes to taking care of our skin in the face of those trends we see on social media of using more than ten products on the face. The expert advocates for using key ingredients that really work and that, used consciously and simply, are truly effective.

That is why she defends the most classic combination, which is to use vitamin C together with a good sunscreen. A result backed by medical science, of which she herself says: “Sunscreen reduces the amount of radiation that reaches the skin, while vitamin C neutralizes part of the oxidative damage that inevitably occurs. Together they offer superior protection against photoaging.”

But there is more. The doctor recommends choosing quality products with formulations backed by science without being swayed by good prices. But she also warns that we should not obsess over high percentages. “The concentration is only part of the equation. Stability, pH, skin penetration, and formulation technology can be even more important than the percentage shown on the packaging,” notes Dr. Revuelta.

In other words, it is essential to consider how the vitamin C has been formulated when choosing the product you want to use on the face and not pay so much attention to whether it is a very high amount, but whether it is a stable vitamin C to act effectively.

And this antioxidant works as a cofactor in collagen synthesis and as a regulator of melanin production, which explains the success of its benefits: firmness, even skin tone, and protection against photoaging are some of the advantages that have made vitamin C, without a doubt, one of the preferred ingredients for facial care. A skincare routine that, finished with a high-SPF sunscreen, is all you need to take care of your skin in summer, but also throughout the rest of the year.

Emma Caldwell
Emma Caldwell
I’m Clara Desrosiers, a writer and fashion editor based in Toronto. I founded Backdoor Toronto to explore the intersection of fashion, identity, and culture through honest storytelling. My work is driven by curiosity, community, and a love for the creative pulse that defines this city.