膜层

The conversion film is probably constituted of amorphous and pored alloying tannate chelate.

这种转化膜很可能是由有一定孔隙的非晶态合金单宁酸膜层构成.

It penetrates effectively and improves the cells to form transparent hydrated retia, directly provides skin with abundant nutrition and moisturizes the deep skin.

渗透力强，促进细胞形成透明的水化膜层，肤丰富的营养，持久的深层保湿功效。