Simple Booster Serum 10% Niacinamide (Vitamin B3) 30 ML

Save £2.66
Was £7.99
30 ML | £17.77 per 100ML

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Pick a skin care concern – niacinamide will take it on. This powerful all-rounder is so versatile and treats every skin type with kindness (from dry skin to oily and even sensitive skin).


Our new Booster Serums contain high-performance ingredients to supercharge your skin care routine for instant, visible results. 10% Niacinamide (vitamin B3) and B5 hydrates, smooths and helps to strengthen and protect your skin barrier. It regulates sebum production (avoiding greasiness and breakouts) and even helps to reduce enlarged pores to improve your skin texture.


Like all Simple products, our Booster Serum is dermatologically tested, non-comedogenic, contains no harsh chemicals and is free from alcohol, mineral oils, artificial colours and fragrance. This Simple product is PETA approved vegan.


Shake, drop, dab – it's that simple. After using a cleanser, apply our non-sticky, non-greasy Booster Serum on its own or mix a few drops into your favourite moisturiser for a super-quick skin care boost. Oh, and it’s fab under makeup too. Try cocktailing it with our hydrating 3% Hyaluronic Acid & B5 Booster Serum (add a few drops of each).


It's best not to combine niacinamide with vitamin C, as these two antioxidants are incompatible when used closely together. If you'd like to use both in your skin care routine, we'd recommend using our glowing 10% vitamin C + E + F Serum Booster in the morning and then using our strengthening 10% Niacinamide (Vitamin B3) Booster Serum as part of your night time skin care routine. Keep calm and carry on caring for your skin.


Key features:

  • The strengthening kind! Niacinamide is a powerhouse skin care ingredient that frees your skin from signs of damage, strengthens your skin barrier and protects even sensitive skin from future threats
  • Shake, drop and dab your way to stronger, healthier-looking skin. 10% Niacinamide (Vitamin B3) and B5 deeply hydrates and softens even dry skin, making it smoother and more even-looking
  • A multi-action sensitive skin care hero. Along with moisturising dry skin and regulating sebum, this booster protects from dryness, improves elasticity and texture and reduces pore size and wrinkles
  • A non-greasy, non-sticky serum emulsion = amazing skin care for even sensitive skin! It contains 88% naturally derived ingredients to deeply hydrate, protect and calm redness and irritation
  • Our kind to skin promise. This product is PETA vegan approved and contains no harsh chemicals, no alcohol, no mineral oils, no artificial colour or perfume - The best skincare for sensitive skin
  • Contains superpowered ingredients, kind to even sensitive skin. This serum can do it all, from improving skin texture and elasticity to strengthening your skin barrier and relieving dry skin

How to use

1. Shake well to blend the actives

2. Cleanse, tone, apply 2-3 drops to your face and neck

3. Or mix with your fave moisturiser


Aqua, Niacinamide, Propanediol, Caprylic/Capric Triglyceride, Glycerin, Panthenol, Tapioca Starch, Coco-Caprylate, Polyglyceryl-6 Distearate, Dicaprylyl Ether, Caprylyl Glycol, Helianthus Annuus Seed Oil, Sclerotium Gum, Phenoxyethanol, Citric Acid, Polyglyceryl-10 Stearate, Sodium Hydroxide, Pantolactone, Tocopherol. more less

Delivery options

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£1.50 or free if you spend £15 or more from your choice of 1,800 stores.

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£3.95 or free when you spend £25 or more.

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Order by 10pm (subject to change during promotions), available 7 days a week for £4.95. This may not be available during public holidays or weekends in between public holidays. Usually delivered between 8am and 9pm. The earliest delivery date for these orders will be shown at the checkout.

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£4.50 - Select a delivery date 3 days before your flight.

Named Day Delivery
£4.75 - choose a weekday within the next 14 days for delivery.

For more information see our delivery help or view our returns policy.