If you’re already investing in high-performing skincare, you understand that healthy skin requires the right ingredients. While serums, actives and the latest Korean skincare ingredients can all have their place in your routine, true radiance starts at the cellular level. That’s where antioxidants for skin come in. Like all antioxidants, they act as a defense system, protecting the cells from damage and degradation that can show up as lacklustre, struggling skin. Since they work from the inside out, antioxidants create skin that not only glows but remains plump and truly healthy.
What are antioxidants and why do they matter?
Antioxidants are naturally occurring compounds that act as the stabilising ‘equal opposite’ to destabilising free radicals produced during normal metabolic processes, as well as due to many events of modern life such as pollution and stress.
Antioxidants work by donating electrons to free radicals, which stops free radicals from scavenging electrons from healthy cells. This is the stabilising force that prevents damage to cells, DNA, collagen, and other skin structures.
In a nutshell – antioxidants help slow the processes that make the skin look tired, dull, and prematurely aged.
How oxidative stress damaged skin
Free radicals aren’t inherently bad, but if they grow to outnumber the body’s ability to neutralise them, problems can arise due to a process known as ‘oxidative stress’. This imbalance accelerates ageing throughout the body, including the skin.
Over time, oxidative stress contributes to premature skin ageing by:
- Breaking down collagen and elastin
- Impairing skin barrier function
- Disrupting cellular repair processes
- Increasing inflammation
Common triggers for oxidative stress include:
- Excessive sun exposure
- Air pollution
- Chronic stress
- Chronic poor sleep
- Blood sugar imbalances
- Alcohol
- Smoking
- Diets high in processed foods
While topical antioxidant skincare can be great for defending the outer layers of the skin, internal antioxidant support works systemically, protecting skin cells as they form and regenerate.
Benefits of antioxidants for overall health
Supporting antioxidant levels in the body isn’t just about skin health and appearance, it’s foundational for whole-body health.
Key benefits of antioxidants include:
- Supporting immune resilience
- Reducing chronic inflammation
- Protecting cardiovascular health
- Supporting brain health and cognition
- Slowing cellular ageing
Benefits of antioxidants for skin health
When it comes to beauty from within, antioxidants help to:
- Maintain collagen integrity and elasticity
- Support even skin tone and brightness
- Reduce visible signs of photoageing
- Improve skin resilience and repair
- Enhance the skin’s response to topical actives1
Antioxidants nourish the cells as they regenerate, as well as protecting the systems that support a healthy complexion.
The heavy hitters: key antioxidants for skin health
Certain antioxidants pack a bigger punch when it comes to skin structure, glow, and defence:
- Vitamin C – an essential nutrient for skin health and an important constituent in the epidermis, vitamin C supports collagen synthesis, helping to maintain firmness and elasticity. It also protects against UV-induced oxidative damage and supports brighter, more even-looking skin.2
- Resveratrol – a potent, plant-derived compound known for its ability to support cellular health and longevity. Resveratrol helps protect skin from environmental stressors and can assist in preserving collagen and elastin over time.3
- Zinc – famous for skin healing and repair, zinc is a key mineral regulating inflammation and collagen formation. Adequate zinc status is particularly important for stressed, hormonally challenged or mature skin.4
- Glutathione – often referred to as the body’s ‘master antioxidant’, glutathione plays a central role in neutralising free radicals and supporting cellular detoxification. For skin health specifically, glutathione helps protect against oxidative damage, supporting overall skin tone and health while working synergistically with nutrients like vitamin C for enhanced skin resilience and elasticity.5
Nutrition and lifestyle habits that support glowing skin
If the list of common causes of oxidative stress above are anything to go by, nutrition and lifestyle habits matter just as much as antioxidant support from a high-quality supplement.
A diet rich in colourful plant foods such as berries, leafy greens, herbs (fresh and dried), and extra virgin olive oil provides a broad-spectrum of protective antioxidant polyphenols. Getting enough protein from foods like meat, organic tofu, seafood, legumes, nuts and seeds helps maintain the skin’s structure and supports steady blood sugar levels, which in turn reduces inflammatory stress on the skin.
Sleep quality, stress management and regular movement all influence oxidative load, as does adequate daily hydration to support circulation, nutrient delivery and skin barrier function. Together, these lifestyle foundations help antioxidants do their best work.
Skincare is an investment, but so is what you put into your body to build healthy cells – including skin cells – over time. By supporting your skin internally with targeted antioxidants, you’re nourishing the cells that determine how your skin looks, feels, ages, and behaves. Healthy, glowing skin isn’t just applied – it’s built from the inside out.
Interested in learning more? Sign up for our monthly e-newsletter or read more great articles from Micronutrition.
This article was written by Sophia Power, a Clinical Nutritionist.
Reference:
- Addor, F.A.S. (2017). Antioxidants in dermatology. An Bras Dermatol, 92(3):356-262. https://pmc.ncbi.nlm.nih.gov/articles/PMC5514576/#r35
- Linus Pauling Institute. Vitamin C and skin health. Written September 2011, accessed January 2026 from https://lpi.oregonstate.edu/mic/health-disease/skin-health/vitamin-C
- Rao, A., et al. (2025). Trans-resveratrol reduces visible signs of skin ageing in healthy adult females over 40: an 8-week randomized placebo-controlled trial. Front. Ageing, 6:1727244. https://www.frontiersin.org/journals/aging/articles/10.3389/fragi.2025.1727244/full
- Gupta, M., et al. (2014). Zinc therapy in dermatology: a review. Dermatol Res Pract, 10:709152. https://pmc.ncbi.nlm.nih.gov/articles/PMC4120804/
- Guneet, G., et al. (2021). Glutathione: The master antioxidant – beyond skin lightening agent. Pigment International, 8(3):144-152. https://journals.lww.com/pigi/fulltext/2021/08030/glutathione