Is Centella (Cica) safe, and who should be careful with it?

Centella asiatica (Cica) is generally very well tolerated, but it is classed as a weak sensitizer, so a few people should be careful. Anyone with a known allergy to Centella, or to plants in the carrot/celery family (Apiaceae/Umbelliferae), is best avoiding it, and anyone who has reacted to it before should patch-test first. Reported allergic reactions are uncommon and were mostly linked to prolonged use on already-compromised skin, sometimes alongside added fragrance, so fragrance-free Cica products are a safer pick for reactive skin. This is a cosmetic soothing ingredient for the look and comfort of skin, not a treatment for any skin condition.