Description
Introduction
KLM C-20 Vitamin C Serum is a potent cosmetic brightening and anti-dullness serum formulated with 20% Vitamin C to enhance skin radiance, even-looking tone, and smoothness.
Perfect for both UK weather and Australia’s warm climate, this advanced antioxidant serum absorbs quickly without stickiness, helping skin appear fresher, brighter, and more youthful.
Ingredients
- Vitamin C (20%) – L-Ascorbic Acid / Stable Derivatives
- Hyaluronic Acid
- Niacinamide (Vitamin B3)
- Ferulic Acid
- Glycerin
- Propanediol
- Aloe Vera Extract
- Purified Water
- Natural Stabilizers & Preservatives
Key Benefits
- Helps brighten dull and uneven-looking skin
- Boosts visible radiance and skin glow
- Improves the look of dark spots and pigmentation
- Refines texture for smoother-looking skin
- Antioxidant-rich formula protects from environmental stress
- Lightweight texture ideal for UK & AU climates
- Pairs well with sunscreen for daytime routines
Directions for Use
Apply 3–4 drops on clean, dry skin in the morning.
Gently massage until absorbed.
Use sunscreen afterwards for best results.
For sensitive skin, start with alternate-day use.
Safety Information
- For cosmetic external use only
- Not recommended for use on irritated or broken skin
- Patch test before first application
- Vitamin C is light-sensitive — store in a cool, dark place
- Keep away from children
Frequently Asked Questions (FAQs)
1. What does KLM C-20 Serum do?
It brightens the appearance of skin, improves glow, and evens visible tone.
2. Can I use it every day?
Yes, it is suitable for daily morning use.
3. Is 20% Vitamin C strong?
Yes — ideal for experienced users wanting high-strength brightening.
4. Is this suitable for UK weather?
Yes, it helps fight dullness caused by cold weather.
5. Is it suitable for Australian heat?
Yes — lightweight, non-greasy, and absorbs quickly.
6. Does it reduce the appearance of dark spots?
Yes, it helps improve the look of marks and uneven tone.
7. Can men use it?
Absolutely — suitable for all genders.
8. Can it be used with hyaluronic acid?
Yes, they layer well together.
9. Should it be used with SPF?
Yes! Essential for daytime Vitamin C routines.
10. Can I apply makeup over it?
Yes, it acts as a smooth base under makeup.
11. Does it sting?
Mild tingling is normal with strong Vitamin C formulas.
12. Can teens use it?
Recommended for adults only.
13. Can I use it at night?
Yes — morning or night, but morning is best.
14. Should I avoid using it with retinol?
Avoid using on the same night — alternate usage.
15. How long before results show?
Skin brightness may improve in weeks of consistent use.
Official References (Clickable)
- NHS – Vitamin C & Skin: https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-c/
- NICE – Dermatology Advice: https://www.nice.org.uk/guidance
- MHRA UK – Cosmetic Regulation: https://www.gov.uk/government/organisations/mhra
- TGA Australia – Cosmetic Standards: https://www.tga.gov.au
Scientific References (Clickable)
- PubMed – Vitamin C Dermatology Research: https://pubmed.ncbi.nlm.nih.gov/
- Journal of Cosmetic Dermatology: https://onlinelibrary.wiley.com/journal/14732165
- DermNet NZ – Vitamin C: https://dermnetnz.org/topics/ascorbic-acid








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