Not all Astaxanthin is equal.

AstaFactor® brand products deliver an exceptionally pure, high quality 100% NATURAL astaxanthin. Quality control is easily maintained and monitored during production, preserving the integrity of our source microalgae strain, Haematococcus pluvialis.

Studies strongly support the superior quality of natural astaxanthin over synthetic astaxanthin.
The production process of natural astaxanthin, in particular, even affects the quality of natural astaxanthin. 

Even still, not all products on the market containing natural astaxanthin are the same.