Question 1

Can I use EGF-type Oligopeptide and Ferulic Acid together?

Accepted Answer

EGF-type Oligopeptide suits PM and Ferulic Acid suits AM, so the simplest answer is to use each at its own time of day. Split that way there is no conflict at all.

Question 2

What is hyaluronic acid and how do you use it?

Accepted Answer

Hyaluronic acid is a humectant that draws water into the skin for a plumper, hydrated look. In Korean routines it's best applied to damp skin and sealed with a moisturizer on top, so the moisture it attracts stays locked in rather than evaporating.

Question 3

Can you use vitamin C and niacinamide together?

Accepted Answer

Yes, current understanding is that vitamin C and niacinamide can be used together safely, and many Korean formulas combine them. The old warning that they cancel out is largely outdated. If your skin is sensitive, you can still apply them at different times of day to be cautious.

Question 4

Can I mix Korean and Western skincare?

Accepted Answer

Yes. Products do not care where they were made — what matters is the ingredients and the order you apply them. Layer thinnest to thickest, avoid stacking two exfoliating actives, and introduce anything new one at a time.

Question 5

Can I use vitamin C and retinol together?

Accepted Answer

Not in the same layer, but easily in the same routine — vitamin C in the morning, retinol at night. That split suits both: vitamin C partners with sunscreen, and retinoids are degraded by light.

Can I use EGF-type Oligopeptide and Ferulic Acid together?

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