Your daily sunscreen – featherlight, invisible, perfect under make-up.
- No white cast, no greasy film, no pilling
- Dermatologically tested for sensitive & acne-prone skin
- With Ectoin and hyaluronic acid – fragrance-free, alcohol-free, vegan
30 ml (116,33 €/100 ml) · Incl. VAT, plus shipping · Delivery in 2–4 business days
Skin health and UV protection in one.
The daily-use sunscreen that doesn't make you choose between skin health and UV protection: modern UV filters with Ectoin, hyaluronic acid and antioxidants. Certified microbiome-friendly, fragrance-free and alcohol-free.
- EctoinEctoin is a powerful natural molecule that protects skin cells from environmental stress such as UV light, pollution, and dryness. It helps soothe the skin, reduces irritation, and supports long-lasting hydration.
- Hyaluronic acidHyaluronic acid is a moisture magnet. It attracts and holds water in the skin, keeping it plump, smooth, and hydrated throughout the day. This helps the skin feel soft and look fresh while preventing dryness from sun exposure.
- Photobiome™Photobiome™, winner of the Best Ingredient Award Korea, helps support the skin’s natural microbiome—the community of good bacteria on your skin. It strengthens the skin’s barrier, helps reduce the stress caused by sunlight, and keeps the skin looking healthy and balanced.
Show all ingredients (INCI)
Manufacturer:
Stella Sun GmbH
Schiffbauerdamm 5
10117 Berlin
E-Mail: hello@sun-matters.com
Product: LIGHT SERUM SPF50
EAN: 4270004891843
For external use only. Avoid contact with eyes. Keep babies and young children out of direct sunlight. Reapply frequently and generously.
What you can expect from us
- For sensitive skinGentle – even on easily irritated skin
- Dermatologically developedDeveloped together with dermatologists
- Non-comedogenicWon't clog pores
- VeganNo animal-derived ingredients
- Hawaii Reef Act 104Free from oxybenzone, octocrylene & octinoxate
Clinical study
Clinically tested.
Our efficacy claims are backed by a clinical study from an independent laboratory.
→ Improvements after use
Visible improvements in fine lines, hydration and radiance.
→ Measured in the lab
Significantly improved hydration, fine lines, smoothness, radiance, elasticity, firmness and skin barrier – compared with the control groups.
*Based on a 56-day independent clinical study in accordance with EU Regulation No. 655/2013.

Biotech active
Biotechnologically developed sun care.
Light Serum SPF50 contains Photobiome™ – a multi-award-winning biotech active made from pomegranate and desert cotton stem cells (including the Best Ingredient Award, in-cosmetics Korea 2023). It helps your skin's microbiome protect itself against the sun. Discover what's inside and how it works.
Real results
This is how it looks on real skin.
Real videos from our community – texture, finish and application, unfiltered.
Reviews
4.8 · 38 reviews
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„It works really well and the finish looks great. Most importantly, it's rated super highly by third party apps like Yuka. As a professional athlete, I use sunscreen almost every day. A safe and effective formulation that doesn't use harmful ingredients is essential and...“
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„Mega tolles Produkt, Sonnencreme mit den besten Inhaltsstoffen, die auch noch Spaß macht!“
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„Perfect“
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„Serum auftragen und vergessen, das man eine Sonnencreme mit SPF 50 auf der Gedichtshaut hat. Wie lange habe ich mir das gewünscht und jetzt bei sun matters gefunden. Danke auch für den neutralen Duft. Bei der nächsten Bestellung ist dann auch der Stick dabei.“













