Natural plant extracts products are related to vision lutein, anthocyanins, zeaxanthin, beta carotene and shrimp red element and so on, but lutein is the only can exist in the eye lens carotenoid composition, because for the protection of eyesight is very important, and lutein absorption rate is very low in fruits and vegetables at ordinary times, marigold extract of lutein is very important.The specifications on the market are between 5% and 80%, of which 10% lutein is water soluble and can be used as capsules.There are also lutein crystals and extracts.

Marigold extract zeaxanthin and lutein isomers, and also is the natural pigment of protecting our eyes, about choice lutein or corn yellow qualitative problems, there are a few a few important factors:

1. In retinal zeaxanthin content is lower, the amount of adults from food intake enough

2. Commonly zeaxanthin human body absorb easier, lutein is hard, so the body is more likely to lack of lutein

3.both pigment is a main pigment, in the human retina macular lutein content is higher, however, is preferred.If high content of zeaxanthin is needed,a compound can also be made, but lutein content is much higher than zeaxanthin content.so the customer is advised to add lutein