Is Vitamin C good for oily skin types?

Does vitamin C reduce oil?

Not directly: vitamin C isn't an oil-control treatment. What it does is help keep your skin balanced. It calms the oxidative stress and inflammation that make oily skin worse, and in a well-made serum it works alongside ingredients like niacinamide that help with shine. That's why most people with oily skin find their complexion looks clearer, calmer and less shiny once vitamin C is part of their routine.

Will vitamin C make oily skin worse or cause breakouts?

A lightweight, water-based vitamin C serum won't make your skin oilier or clog your pores. If your skin feels greasier after using a vitamin C product, it's usually one of three things:

• The formula is too heavy. Oil-based vitamin C products can feel greasy on oily skin.
• You're using too much. 3–4 drops is enough for your face and neck.
• Your skin is dehydrated. Follow with a light moisturiser or hyaluronic acid.

Vitamin C isn't a spot treatment, so it won't clear active breakouts on its own. Where it really shines is with what breakouts leave behind: the marks, redness and uneven tone.

Which vitamin C is best for oily skin?

Choose a water-based serum over an oil or cream. It absorbs quickly and won't add shine.

Look for pure vitamin C (ascorbic acid). It's the most researched form, and your skin can use it straight away. Studies generally look at 10–20%; ours is a high-strength 20%.

Look for supporting ingredients. Niacinamide helps balance oily skin and refine pores, and hyaluronic acid hydrates without oil. Our serum contains both, plus beta glucan to soothe.

Can you use vitamin C with other acne and oily-skin ingredients?

Niacinamide Yes. They work brilliantly together, which is why our serum already includes it.

Retinol Yes, at different times. Vitamin C in the morning, retinol at night.

Exfoliating acids (such as salicylic or glycolic acid) Yes, but not at the same time. Use them at a different time of day from your vitamin C to avoid overdoing it.

Mistakes to avoid with oily skin

Over-cleansing. Washing too often strips the skin, and it can respond by producing more oil. Twice a day is plenty.

Skipping moisturiser. Dehydrated skin often looks oilier, not less. A light moisturiser keeps it balanced.

Choosing a heavy formula. Oil-based vitamin C products can feel greasy. Stick to a lightweight, water-based serum.

Giving up too soon. Most people see a brighter glow within three weeks, with marks fading from around week six.

The bottom line

Vitamin C serum is a brilliant addition to an oily-skin routine, as long as you choose a lightweight, water-based formula. It helps keep shine and congestion in check, refines the look of pores, fades acne marks, calms redness, brightens your complexion and protects your skin, all without adding oil. Use it every morning with SPF, and within weeks you'll see what it can do. And if it's not right for you, our 60-day money-back guarantee has you covered.

We deliberately made our serum lightweight, so it absorbs into your skin rather than sitting on the surface. Great skincare shouldn't just coat your skin, it should become part of it. Our 20% Vitamin C Serum is £14.95, water-based and oil-free, and rated 4.7 out of 5 by our customers. One bottle lasts around 4–6 weeks; save 10% on two bottles or 15% on three for a full twelve-week course.