How much sunscreen should I apply to my face?

The recommended amount for the face and neck is approximately 1/4 teaspoon (1.25ml) of sunscreen, which equals about a nickel-sized dollop. Most people apply 20–50% of the recommended amount, which significantly reduces the actual SPF protection. For a sunscreen labeled SPF 50, applying half the recommended amount gives roughly SPF 17 real-world protection. Apply to completely dry skin, and wait 15–30 minutes before sun exposure for chemical sunscreens (mineral sunscreens work immediately).

Does sunscreen need to be reapplied indoors?

If you are near windows, yes, UVA rays (which cause aging and skin cancer) penetrate glass. UVB rays (which cause burning) are blocked by standard glass. For desk work near a window, reapply SPF once in the morning. For outdoor activities, reapply every 2 hours or immediately after swimming or sweating. A setting spray SPF or powder SPF makes reapplication over makeup practical.

What is the difference between PA rating and SPF?

SPF measures UVB protection only (the rays that cause sunburn. PA rating (used in Asian sunscreens) measures UVA protection: PA+ = some UVA protection, PA+++ = high, PA++++ = maximum. Western sunscreens use the term "broad spectrum" to indicate UVA protection, but this is a binary pass/fail) it does not quantify the degree of UVA protection. PA++++ Japanese/Korean sunscreens often provide superior UVA protection compared to most Western broad-spectrum formulas. For anti-aging, UVA protection matters more than the SPF number.

sunscreen · Review

Maelove Glow Maker Review: The $30 SkinCeuticals Dupe

Maelove Glow Maker is the closest dupe to SkinCeuticals C E Ferulic at 1/6 the price. Here's the honest comparison.

Our verdict

Maelove Glow Maker Vitamin C Serum

$40

8.7

out of 10

Check price →

Last updated April 13, 2026 · 5 min read · First published Apr 2026

Heads up: this post has affiliate links. We may earn a small commission if you buy something, at no extra cost to you. We only link to stuff we'd actually tell a friend about. Prices shown are approximate and change often; check the retailer for current pricing.

What we like

✓ 15% L-ascorbic + vitamin E + ferulic, the Duke patent ratio
✓ About 1/6 the cost of SkinCeuticals C E Ferulic
✓ 75-80% of CEF's effect at 17% of the price
✓ Real ingredient concentrations
✓ Available on Amazon

What bugs us

✗ Slightly less elegant texture than SkinCeuticals
✗ Subtle vitamin C scent

The short answer

Maelove Glow Maker is the most honest dupe of SkinCeuticals C E Ferulic, uses the patented Duke ratio at 1/6 the price. Delivers 75-80% of CEF’s effect with a less luxurious feel.

The “we copied SkinCeuticals C E Ferulic” budget serum that actually delivers.

How it compares to SkinCeuticals C E Ferulic

Feature	C E Ferulic ($182)	Glow Maker ($30)
L-ascorbic acid	15%	15%
Vitamin E	1%	1%
Ferulic acid	0.5%	0.5%
Texture	Premium	Slightly thinner
Stability	6 months	4-5 months
Real-world effect	100% baseline	~75-80%

Same Duke patent ratio. Same active concentrations. Cheaper packaging and slightly less elegant formulation.

Who should buy

Anyone wanting effective vitamin C without paying $182
Frequent travelers (cheaper to lose)
Routine builders adding morning antioxidant
People who want to test vitamin C before committing to premium

Check current price on Amazon →

The verdict

Score: 8.7/10. The honest budget vitamin C dupe. Worth $30 vs $182.

Ready to buy?

Grab the Glow Maker Vitamin C Serum on Amazon

Check current price →

The Glow-Up · free challenge

Before you buy, get the free 7-day Glow-Up

We test sunscreen products for 8+ weeks before we recommend them. Take the free 7-day challenge on what actually works, then one honest email a week. No BS.

Free. Unsubscribe any time. We never sell your data.

Related reviews

SkinCeuticals · sunscreen

C E Ferulic Vitamin C Serum

An honest look at CE Ferulic vs Maelove ($30), Timeless ($25), and Naturium ($22). Here's what the $182 actually buys you, and which dupe gets 80% of the way.

9.6/10Read review →

Anessa · sunscreen