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Ingredient pairing

Can you mix Cysteamine and Vitamin C (LAA)?

Written by Maya FaourHow we score →

Fine togetherThey're fine together.

CysteamineVitamin C (LAA)

These two actually work well together, and are often formulated side by side.

Routine: You can use these together, morning or night.

CysteamineWorth paying for
Efficacy9
Brightening9
Anti-aging4

Skip if: pregnancy, breastfeeding, very sensitive, compromised barrier

Not in pregnancy
Vitamin C (LAA)Worth paying for
Brightening10
Efficacy9
Anti-aging7

Skip if: very sensitive, rosacea

Ask your doctor in pregnancy

Which one goes first?

Apply Vitamin C (LAA) first

  1. 1Cleanse
  2. 2Vitamin C (LAA)
  3. 3Cysteamine
  4. 4Moisturize

On freshly cleansed skin, Vitamin C (LAA) goes on first, then Cysteamine over it. The rule of thumb is thinner and lower-pH first, richer last.

Adding Cysteamine and Vitamin C (LAA) to your routine

  1. Good news first: these two get along, so there is no special order or waiting period to manage.
  2. Still add them one at a time, a week or two apart, so if your skin does react you know which one to look at.

For your skin type Sensitive skin should ease in gently: Cysteamine and Vitamin C (LAA) can be mildly irritating on their own, and more so alongside another active.

Choosing between them instead? Cysteamine vs Vitamin C (LAA) →

Using a third ingredient? Check all three →Or decode a whole product label →
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Also worth checking

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More pairings with Vitamin C (LAA)

Cysteamine and Vitamin C (LAA), answered

Can you mix Cysteamine and Vitamin C (LAA)?

They're fine together. These two actually work well together, and are often formulated side by side.

Should you use Cysteamine and Vitamin C (LAA) in the morning or at night?

Either. Cysteamine and Vitamin C (LAA) are fine to use together, morning or night.

How should you introduce Cysteamine and Vitamin C (LAA)?

Good news first: these two get along, so there is no special order or waiting period to manage. Still add them one at a time, a week or two apart, so if your skin does react you know which one to look at.

What else should you not mix with Cysteamine?

Nothing else clashes badly with Cysteamine. It fits into most routines, though it is always wise to introduce one new product at a time.

Sources

Plus how we reach every verdict: how we score →

General guidance, not medical advice. When in doubt, introduce one product at a time.