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Dr Tiina Meder
Founder and CEO of Meder by Dr Tiina Meder (founded in 2009), dermatologist and cosmetic safety expert, an experienced lecturer and speaker on the topic of dermatology and skin care, sharing her expertise around the world in Japan, Taiwan, IMCAS Europe and China, FACE, CCR, APAN (Australia, New Zealand), LNE (France, Poland, Ukraine) and Microbiome Connection (USA) to name but a few. Across her career she has had more than 50 articles published.
Antioxidants have become a buzzword in skincare, but what do they actually do for your skin, and how should you use them? Let’s break down the science, the myths, and the practical steps for building antioxidant protection into your daily routine.
Antioxidants are molecules that prevent oxidation, protecting essential substances in our skin from damage caused by free radicals. Free radicals are highly reactive molecules — think of them as tiny troublemakers with open arms, always looking to interact and damage whatever they touch. Antioxidants neutralise these free radicals, preventing them from harming skin cells, DNA, and other structures.
But here’s the catch: not all free radicals are bad. Our bodies naturally produce them to help clean up cellular waste. The key is balance—having enough antioxidants to neutralize excess free radicals, but not so many that we interfere with normal skin processes.
Our skin’s antioxidant protection comes from two main sources:
As we age, our natural antioxidant levels decline, making external support more important. Factors like sun exposure, pollution, smoking, stress, and even certain diets (high in sugar, red meat, and processed foods) can increase free radical activity and oxidative stress on the skin.
Signs that your skin may benefit from extra antioxidant support include:
People with fair skin, those using photosensitising medication, and anyone with inflammatory skin condition (like acne or rosacea) are at a higher risk of antioxidant depletion.
Further reading: Understanding Stress and Skin.
Not all antioxidants are created equal, and their effectiveness depends on how they’re delivered to the skin. Vitamin C is a popular choice, but it’s fragile and not always well absorbed topically unless you’re deficient. Vitamin E (specifically alpha-tocopherol) is a potent fat-soluble antioxidant, best delivered in creams and oils.
Look for serums and creams that combine several antioxidants for synergistic protection.
A minimal and effective routine includes:
Don’t forget sunscreen — ideally with added antioxidants for extra protection.
Colourful, plant-rich diet is your best internal defence. Aim for a variety of fruits and vegetables daily, healthy oils (like olive oil), and moderate amounts of coffee, tea, red wine, and dark chocolate. Supplements like vitamin C, vitamin E, and beta carotene can help if you’re exposed to high UV or have specific needs, but a healthy diet and lifestyle are foundational.
Antioxidants are essential for skin health, but more isn’t always better. Focus on balance, choose products with proven ingredients, and support your skin both inside and out for optimal protection against free radical damage.
Soin-Apax antioxidant calming serum: the best choice for everyone with a sensitive or damaged skin, including people suffering from acne and rosacea.
Energy-Soin antioxidant revitalising serum: the best choice for all individuals with mature skin, or people noticing skin tiredness, enlarged pores or uneven skin colour.