rdrd Red Apple Lacto Calming Serum

Ingredients and claims, checked

Last checked September 7, 2026

No store we checked ships to the US yet. Here's where it's sold:

Korean brand site (in Korean)

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What is it like at a glance?

What the ingredients do

Hydration leads, with 5 of 27 ingredients.

Hydration: 5
Softening: 3
Moisture seal: 2
Skin protection: 2

Worth knowing

Has a fungal-acne trigger

Made for

Calming

What is this product?

Key ingredients: Lactobacillus Ferment 4.9%, Malus Domestica Fruit Water 3.7%, Malus Domestica Fruit Extract
When: Morning and evening

A serum that adds targeted ingredients after toner. It comes in a 30 ml size.

What's good, and what to watch for?

Good points

Contains Lactobacillus Ferment 4.9%, Malus Domestica Fruit Water 3.7%
Panthenol adds moisture

Watch-outs

If you get fungal acne: Lactobacillus Ferment, Candida Bombicola/Glucose/Methyl Rapeseedate Ferment

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Tap a name to read about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary.

Key ingredientWorth a closer look

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

Claims

See each claim, checked (2)

Claims, checked

Red Apple Lactobacked by evidence
Emergency Calmingplausible, not tested

We quote each claim exactly as the brand published it, then check it against the ingredient list and the brand's own documents.

How we check claims

Which articles cover it?

Articles on this site that write about this product.

In microbiome skincare, microbiome is not an ingredientOf 2,228 Korean labels whose full list we hold, not one prints microbiome as an ingredient. Here is what that word becomes once you read the list.