A01 Serum vs A02 Cotton Mask Pads: Ingredients and Directions

Short answer: Trauemy A01 and A02 are different ways to use products whose labels list salicylic and mandelic acids. A01 is a 30 mL serum whose ingredient panel also lists azelaic acid. A02 is a 97 g cotton mask pad product with an after-cleansing, 15–20 minute mask step. The right comparison starts with their formats, printed directions and cautions—not an assumption that one is stronger or that they should be used together.

A01 vs A02 at a glance

A01: a serum applied to specified facial areas

The photographed A01 package identifies a triple acid essence. Its ingredient panel lists azelaic acid, salicylic acid and mandelic acid. The printed directions describe applying an appropriate amount to areas of the face with acne; the package also tells users to use sunscreen cosmetics. Read the A01 ingredient and direction guide or the complete A01 product details before deciding whether this format fits the information you need.

A02: a timed cotton mask step

The photographed A02 package identifies a salicylic acid cotton mask, sold by net weight at 97 g. Its ingredient panel lists salicylic acid and mandelic acid. The directions say to cleanse first, gently apply the mask to the face, then remove it after about 15–20 minutes. The package describes normal, oily and combination skin in its product positioning. The A02 usage guide and A02 product details show the rest of the label-led information.

Which ingredients overlap, and what differs?

Both verified ingredient panels list salicylic acid and mandelic acid. A01 additionally lists azelaic acid among its named acids; azelaic acid does not appear on the verified A02 panel. A01's panel also lists collagen. These are ingredient-list facts. They do not tell you the percentage of any acid, the formula's pH, how either finished product will feel, or which product will give a stronger result.

A02 is described by its package as oil-regulating and acne-relieving care. A01's package uses acne-relieving, soothing and moisturizing language. These phrases identify how each product is presented on its packaging; they are not a comparative efficacy test, medical treatment claim or promise of an individual result. For the full INCI lists, use the current A01 and A02 product pages and the package you receive.

How do the printed directions differ?

1. A01 serum: The package directs an appropriate amount to facial areas with acne and includes a sunscreen instruction. It does not provide a verified acid percentage or a fixed daily schedule in the material reviewed here.
2. A02 cotton mask: The package directs an after-cleansing mask step and removal after about 15–20 minutes. The verified net content is 97 g; the packaging evidence used for this guide does not establish a pad count or a separate rinse step.

The difference is a practical one: a serum application described for specified areas versus a mask with a printed removal time. This guide does not turn those directions into a new regimen or advise using the products in the same session.

Which cautions should you compare?

Both packages carry a salicylic acid caution saying the products should not be used on children under three years old. Both tell users to stop use or seek medical advice if discomfort or an abnormal reaction occurs. A01 also carries a warning related to a history of allergy to topical collagen products and a sunscreen instruction. Read the full wording on the current packaging; a short article cannot replace its caution panel.

Neither package evidence nor this comparison establishes an A01-plus-A02 layering protocol, an ideal frequency, or compatibility with other acid products. If you need advice for a personal skin condition or a reaction, seek qualified individual guidance rather than inferring a routine from ingredient names.

How to choose what to read next

If your question is about the three named acids and a serum's printed directions, start with A01 and its ingredient guide. If your question is about a timed cotton mask step, skin-type positioning or the 15–20 minute instruction, start with A02 and its usage guide. For the separate question of where a toner appears relative to a serum, read the toner and serum order guide; it does not assert that A01 and A02 should be combined.

Quick answers

Do A01 and A02 both list salicylic acid?

Yes. The photographed ingredient panels for both products list salicylic acid and mandelic acid.

What named acid is listed for A01 but not on the verified A02 panel?

A01 lists azelaic acid alongside salicylic and mandelic acids. Azelaic acid is not on the verified A02 ingredient panel used for this guide.

Is A01 stronger than A02?

The verified packaging does not give acid percentages or pH values. Ingredient names and product format alone cannot establish which finished product is stronger.

Can I use A01 and A02 together?

The verified package material does not establish a combined-use protocol. Follow each current package's directions and cautions; do not treat this comparison as a layering instruction.

Source: Trauemy A01 and A02 photographed outer packaging, ingredient panels, directions and caution panels. Reviewed on 25 September 2026. Packaging may change; check the current product you receive.