Research

Original studies, evidence reviews and articles on skincare and wellbeing during pregnancy and breastfeeding.

Research articles and reports

Expert conversation ·

Skincare through pregnancy and breastfeeding

Five questions with Professor Caitriona Ryan on ingredients, formulation and changing skin. In collaboration with SKN TO SKN.

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Looking beyond the ingredient nameSKN TO SKN
  1. The ingredientIdentity and evidence
  2. The concentrationHow much is in the formula
  3. The exposureWhere, how often, how long
  4. The finished productHow it comes together

Prof Ryan’s formulation perspective

Original label study · Checked

Fragrance-free, unscented… what’s in the bottle?

What 30 manufacturer listings say about fragrance, and what their ingredient lists show.

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Fragrance wording in 30 product listings
  • Named unscented4
  • Fragrance-free wording9
  • Synthetic / artificial fragrance only4
  • No explicit claim recorded13

Original label study · Checked

Beyond the name on the bottle

Which ingredient families appear across 30 COSRX, PURITO and Beauty of Joseon formulas, beyond the names on the bottles.

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Ingredient families in 30 formulas
  • Hyaluronic acid & hyaluronates21
  • Panthenol20
  • Niacinamide15
  • Centella & selected derivatives14

Four most frequent families · Categories overlap

The two label studies use the same selected sample of 30 COSRX, PURITO and Beauty of Joseon formulas. The findings describe this sample.

More research

App observations · 28 September–25 October 2026 · Updated

The skincare you’ve been exploring

The brands and products people explored, with a look at product types and Centella and PDRN searches.

How we work

We define the question, explain the sample, and show the sources and limits of every report.

Our ingredient assessments are independent. We do not accept payment for ingredient ratings or favourable assessments. MamaSkin retains control of its methods and conclusions.

Our assessment methodology

Citations & publications

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