Science jargon aside, we have a pretty good idea about the astaxanthin benefits timeline thanks to the collective research on this impressive phytonutrient. For reducing wrinkles, six to 16 weeks seems like the bench mark; for fading age spots, eight weeks sounds like the kicker.* Of course, we’re all unique individuals, so results and personalized timelines can vary for this or any botanical bioactive, but the totality of astaxanthin research is weighty.