Simpla 360 UK
What is Simpla 360 and what is it for? Ingredients, benefits, contraindications, price and even where to buy it. Real reviews and comments.
Editorial category
Facial serums — Editorial review 2026
Editorial reviews of facial serums: active ingredients, concentration, cosmetic mechanism and price benchmarks.
Products in this category
1 supplements reviewed
Facial serums: editorial context
This category gathers our analyses of facial serums available through international shipping, with concentrated formulations for various cosmetic purposes: hydration, antioxidation, apparent anti-ageing, dark-spot management, texture improvement.
The serums we review are marketed as cosmetic products under EU Regulation 1223/2009 or equivalent jurisdiction. They comply with cosmetic safety and labelling rules, but they are not medicines and are not authorised to treat dermatological conditions. Any claim of “treating” skin disease falls outside cosmetic scope.
What we look for when reviewing a facial serum
- Complete and readable INCI list: ingredients with international names, in decreasing concentration order.
- Concentration of key actives: a 0.1 % retinol, a 15 % vitamin C, a 5 % niacinamide — the number matters, not just the name.
- Stable formulation: vitamin C as L-ascorbic acid requires opaque packaging, antioxidant base, and controlled pH; retinoids require protection from light and oxygen.
- Skin-type compatibility: is the product suitable for sensitive skin, mature skin, acne-prone, rosacea? Formulation should match the promise.
- Specific warnings: photosensitisation (retinoids, acids), avoid eye contour, pregnancy/breastfeeding caution.
- Texture and use instructions: amount, frequency, time of day (retinoids are PM products, vitamin C is AM-friendly).
Quick reference: ingredient and benefit
| Ingredient | Main cosmetic benefit | Typical functional concentration |
|---|---|---|
| Vitamin C (L-ascorbic acid) | Antioxidant, brightness, dark spots | 10-20 % at low pH |
| Niacinamide (vitamin B3) | Barrier, pores, sebum, dark spots | 4-10 % |
| Hyaluronic acid | Surface and mid-dermal hydration | 0.1-2 % (multimolecular) |
| Retinol (cosmetic) | Apparent anti-ageing, texture, spots | 0.01-1 % |
| Peptides | Dermal signalling (perceived firmness) | Variable; formulation is key |
| Glycolic / lactic acid | Chemical exfoliation, brightness | 5-10 % |
Red flags in serum marketing
- “Erases wrinkles in 7 days” → cosmetic products cannot do this physiologically.
- “Better than Botox” → false equivalence; mechanisms are completely different.
- “Stem cell serum” → most “stem cell” claims in cosmetics are stem-cell extract, not living cells.
- “Doctor-recommended” without naming the doctor → marketing copy, not endorsement.
- “Clinically proven” without citation → generic, often misleading.
What you will not see in our reviews
- Claims that they replace medical aesthetic procedures.
- Claims of treating dermatological conditions (severe acne, rosacea, resistant melasma).
- Effects comparable to a prescription dermatology medication.
- Visible results in days for what is realistically a months-long process.
For more on how we evaluate cosmetic products and our position on overstated marketing, see our methodology and editorial policy .
Frequently Asked Questions
What is a facial serum and how does it differ from a cream?
A serum is a facial cosmetic with a high concentration of active ingredients in a light, fast-absorbing texture. Compared to a conventional cream, a serum typically contains a higher proportion of actives and a lower proportion of occlusives. Apply on cleansed skin before moisturiser. Common active ingredients include antioxidants, peptides, hyaluronic acid, vitamin C, cosmetic retinoids, and alpha-hydroxy acids in functional concentrations.
Which serum ingredients have solid cosmetic evidence?
Ingredients with the strongest cosmetic evidence: **stable vitamin C** (L-ascorbic acid 10-20 %, antioxidant and brightness), **hyaluronic acid** (surface and mid-dermal hydration), **niacinamide** (4-10 %, barrier function, hyperpigmentation, pores), **cosmetic retinoids** (retinol, retinaldehyde — anti-ageing), **peptides** (dermal signalling, mixed evidence), **glycolic/lactic acid** (gentle chemical exfoliation). Concentration and formulation matter as much as the ingredient name.
Can serums eliminate deep wrinkles?
No. Cosmetic serums can improve the appearance of **fine lines**, hydration, brightness and texture, but established expression wrinkles, deep nasolabial folds, and consolidated lip lines respond to medical treatments such as botulinum toxin, dermal fillers, fractional laser, or deep peels. Expecting aesthetic surgery results from a cosmetic serum leads to disappointment.
Are there side effects with facial serums?
Common adverse effects are local: irritation, peeling, redness, burning sensation. They appear especially with potent actives (retinoids, exfoliating acids, high-concentration vitamin C) and on sensitive skin. Photosensitisation risk: **retinoids and acids require daily sunscreen**. Allergic contact reaction: possible with any ingredient, more frequent with botanical extracts and fragrances. Patch-test new products on the inner forearm for 48-72 h before applying to face.
Can serums be used during pregnancy and breastfeeding?
Some ingredients should be avoided during pregnancy and breastfeeding: **retinoids** (retinol, retinaldehyde, tretinoin, isotretinoin — well-established teratogenic risk for oral retinoids; topical caution by absorption), **high-concentration salicylic acid** (>2 %, avoid extensive use), **hydroquinone**. Reasonably safe: hyaluronic acid, niacinamide, vitamin C, peptides. **Consult your obstetrician or dermatologist for specific concerns**.
How long does it take to see results from a serum?
Hydration and brightness effects can be noticeable within days. Effects on fine lines, dark spots, and firmness typically require **4-12 weeks** of consistent use, since epidermal turnover takes about 4 weeks and deeper dermal changes take months. If after 12 weeks there is no detectable improvement on what was promised, switching formulations is reasonable. Consistency beats brand variety.