Does FEMOIRE Youth Serum have side effects? Sensitive-skin tests, SGS screening and who should ask a doctor (2026 update)

Short answer: FEMOIRE Youth Serum is a topical cosmetic. A 21-day human repeat insult patch test rated it mild, low in irritation potential and hypoallergenic, so it suits sensitive skin too. SGS testing found no hydroquinone, tretinoin, parabens, heavy metals or pathogenic microbes, and the formula leaves out alcohol, steroids, mineral oil, colouring and artificial fragrance. It's for external use only; avoid the eyes, and stop straight away if irritation occurs. If you're pregnant, breastfeeding, under a doctor's care for your skin or using prescription skin treatments, ask your doctor first.

What was it tested for?

What might you notice?

• Irritation or discomfort: it was rated low in irritation potential, but everyone's skin is different. If irritation or discomfort occurs, stop straight away, and see a doctor if it doesn't settle.
• Allergies: it contains herbal extracts including centella asiatica, burdock root, licorice, honeysuckle, lotus and aloe vera. If you're allergic to any of them, check the full ingredient list on the box first.
• Very sensitive skin: try a little on a small area first.

Who should ask a doctor first?

• Pregnant or breastfeeding: ask your doctor first.
• Under a doctor's care for your skin or using prescription skin treatments: ask your doctor first.
• Allergic to herbal ingredients such as centella, licorice or aloe: check the ingredient list on the box first.
• Broken, inflamed or irritated skin: don't apply it there.

How is it different from strong acids and retinoids?

Strong acids and high-strength retinoids can leave sensitive skin red and stinging. FEMOIRE Youth Serum has no tretinoin or hydroquinone. It uses a peptide to target expression lines, with 10 calming herbs to settle redness and dry patches. Human testing rated it mild and hypoallergenic.

Frequently asked questions

Can I use it on sensitive skin?

Yes. It went through skin tests on sensitive skin: a 21-day human repeat insult patch test, a barrier function test and a scarification test. All rated it mild, low in irritation potential and hypoallergenic. If your skin is very reactive, try a small area first.

What is it free from?

SGS testing found no hydroquinone, tretinoin, parabens, heavy metals or pathogenic microbes. The formula also leaves out alcohol, steroids, mineral oil, colouring and artificial fragrance.

What if it stings?

Stop using it straight away, and see a doctor if it doesn't settle. It's for external use only; avoid the eyes.

Can I use it while pregnant or breastfeeding?

If you're pregnant, breastfeeding, under a doctor's care for your skin or using prescription skin treatments, ask your doctor first.

Anything to know about using it in the morning?

In the morning, follow the serum with your moisturiser and sunscreen.

Buy or learn more

See the full ingredients and test reports on the FEMOIRE Youth Serum product page. For where to place the drops and how to use the stone, read how to use FEMOIRE Youth Serum.