For products like Beauty of Joseon face mask, there is generally no specific safety data focused only on breastfeeding mothers. Most face masks are applied topically, so absorption into the bloodstream is usually low, but safety depends on the specific product's ingredients. During breastfeeding, skin sensitivity can also change, so irritation is possible in some individuals. It is advisable to check the ingredient list, avoid products with strong actives if unsure, and consult a doctor or dermatologist for personalised advice.

Topical vitamin C products such as Plum Vitamin C Serum are generally considered safe to use while breastfeeding because only a very small amount is absorbed into the body. There is no strong evidence that they cause harm, but detailed studies in breastfeeding women are limited. To be cautious, avoid applying the serum on or near the breast area so the baby does not come into contact with it, and do a patch test first since skin can be more sensitive during this time. For reassurance and personalised advice, it is best to check with your doctor before adding new skincare products while breastfeeding.

Due to limited safety data, it is not possible to confirm whether this serum is completely safe during breastfeeding. While ingredients such as vitamin C derivatives and niacinamide are generally considered safe for topical use, evidence in breastfeeding women is limited. Therefore, a doctor’s evaluation is important to assess your suitability and minimise any potential risk to you and your baby.

There aren’t specific studies on using 8% L‑ascorbic acid lip treatments while breastfeeding, but it’s generally considered low risk when used only on the lips. To be safe, try a patch test first, avoid letting it touch your baby’s mouth, and stop using it if your lips become irritated. If you have any concerns, your healthcare provider can provide personalised guidance.

Plum Vitamin C Serum is generally considered safe to use while breastfeeding because topical vitamin C has minimal absorption into the bloodstream and is unlikely to affect breast milk. Avoid applying it on or near the breast area to prevent accidental ingestion by the baby. Always perform a patch test before use, as skin sensitivity may increase during breastfeeding, and consult your doctor for personalised advice on safe skincare products during this period.