Plant callus is a mass of undifferentiated plant cells. Plant callus can be re-differentiated into the specialized tissues of a whole plant, with the addition of suitable growth regulators. This ability is known as “totipotency”. In this aspect the plant callus can be called as plant stem cell similar to human stem cell. The Orchids callus stem cell extracts contains the active ingredient such as phytochemical have an effect in growth and proliferation of human skin cells to activate, moisturizing effect, especially, excellent for skin rejuvenation and soothing effect.

植物愈伤组织是大量未分化的植物细胞。植物愈伤组织可以通过添加合适的生长调节剂而重新分化为整株植物的特化组织。这种能力被称为“全能性”。在这方面，植物愈伤组织可以称为与人类干细胞相似的植物干细胞。兰花愈伤组织干细胞提取物含有活性成分如植物化学成分，对人体皮肤细胞的生长和增殖具有活化，保湿作用，尤其对皮肤嫩肤和舒缓作用 。