Question 1

How should I store C-Glow to keep it from turning yellow, and how long does it last once opened?**

Accepted Answer

To maximize freshness, store your serum in a cool, dark place, and many users on Reddit recommend refrigeration. The formula is made in small, fresh batches. Once opened, it's best used within 3-4 months for optimal potency. If it turns a deep yellow or brown, it has oxidized and should be replaced.

Question 2

Is the 15% Vitamin C strength suitable for sensitive skin or beginners?**

Accepted Answer

While effective, 15% L-ascorbic acid is potent. If you have sensitive skin or are new to Vitamin C, we recommend patch testing and starting slowly (e.g., every other day). Some users report initial tingling or purging. If you're concerned, you might consider starting with a lower-strength serum before graduating to C-Glow.

Question 3

I've seen comments about the pump failing or leaking. Is this common?**

Accepted Answer

We use an airless pump to protect the formula from oxidation, and most function perfectly. However, as with any mechanical component, a small percentage may have issues. If you experience problems with your pump, please contact our customer service directly—we're committed to making it right.

Question 4

How does C-Glow compare to much more expensive Vitamin C serums?**

Accepted Answer

C-Glow is frequently praised in skincare communities as a top "dupe" for high-end serums. It uses the same active, stabilized form of Vitamin C (15% L-ascorbic acid with ferulic acid and vitamin E) that studies show is effective. The main difference is in packaging and brand prestige, not the core brightening and protecting benefits.

Question 5

What kind of results can I realistically expect, and how soon?**

Accepted Answer

Based on over 1,800 reviews, users most commonly report a brighter, more even skin tone and a healthy "glow" within a few weeks of consistent use. It's excellent for tackling post-acne dark spots and general dullness. Remember, it's a skincare staple for protection and gradual improvement, not an overnight miracle worker. For best results, apply daily in the morning under your sunscreen.

Geek & Gorgeous - C-Glow - lightweight, water-like 15% Vitamin C + Ferulic acid & Vitamin E Serum, protects against environmental damage, boosts collagen & evens skin tone - all skin types, 1 oz

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