The only difference is that the effects of topical products are more inclined towards maintenance and prevention of melanin deposition
Independent assessments of commercial probiotics consistently reveal discrepancies between label claims and actual contents, including inaccurate strain designations, missing strain-level information, and viable counts that are either lower or higher than declared, especially in food products (567, 568)
These are reported research findings, not guaranteed outcomes, and individual results in studies varied
PMID 24645960
Urakaze M, Kobashi C, Satou Y, Shigeta K, Toshima M, Takagi M, Nishida H (2021) The beneficial effects of astaxanthin on glucose metabolism and modified low-density lipoprotein in healthy volunteers and subjects with prediabetes