Skincare shoppers can save 20% on MIAMO's Superdose Vit C + [C,L] Radiance Activator Freeze Dry Serum, a 'high dose' formula that users say leaves skin 'firmer, less oily, and looking less dull'. The serum is priced at £38 for a 10-day treatment and £86 for a 30-day supply, but entering the code HELLOUK20 at checkout before 31 December 2026 brings the prices down to £30.40 and £68.80 respectively.
Brand origins and formula
MIAMO is a clinical skincare brand founded in 2012 by pharmacists Dr Elena Aceto di Capriglia and Dr Camilla D'Antonio, and has recently entered the UK market. The product is designed to tackle common concerns associated with mature skin, including dullness, loss of firmness, redness and environmental damage.
The star ingredient is freeze-dried L-Ascorbic Acid, a pure form of vitamin C that offers antioxidant protection, brightens the complexion and boosts collagen production. Unlike standard vitamin C serums, MIAMO uses freeze-dry technology, which removes water from active ingredients to preserve their potency and stability.
Dual-chamber design and additional ingredients
The serum features a dual-chamber design that keeps the liquid and freeze-dried vitamin C separate until activation, ensuring maximum potency and freshness. The formula also includes carnosine peptides to boost skin elasticity and minimise visible signs of ageing, lycopersicum leaf extract to protect against pollution and oxidative stress, and a centella asiatica triterpene complex to calm the skin, fortify the skin barrier and diminish redness.
For those preferring a traditional serum, Facetheory offers the Glow-C Vitamin C 30% Serum at £37, which contains 30% ethyl ascorbic acid to fade hyperpigmentation and dark spots. At Cult Beauty, the Paula's Choice 25% Vitamin C+ Glutathione Clinical Serum 30ml, priced at £65, features a pump dispenser and a 'highly stable' oil-and-water blend.
Shopper reviews
While there are no reviews on the MIAMO website, shoppers have shared their experiences on Trustpilot. One customer wrote: "I just turned 56 and treated myself to the high-dose vitamin C. I've finished the first boost, and my skin looks more defined and radiant. I absolutely love it."
Another reviewer in their 60s said: "I purchased this new Vitamin C product. Personally, I notice my skin looking more radiant every day, with a finer, firmer texture. It is a great buy for someone over 60." A third shopper over 50 reported firmer, less oily skin after a couple of weeks of use.
Not all feedback was positive. One shopper with combination skin said the serum left a 'greasy' residue and felt it was highly priced. However, others praised the lightweight texture, with one shopper calling the serum "fantastic" and noting it "absorbs quickly and isn't sticky". Another long-term user said the new Vitamin C serum is "improving my skin texture".
MIAMO's Superdose Vit C + [C,L] Radiance Activator Freeze Dry Serum is available from £30.40 using the code HELLOUK20.
