What a proprietary blend is
A proprietary blend lists ingredient names together with only a combined total weight, hiding individual amounts. Many supplement brands use this to protect formulations.
What genuine transparency looks like
True transparency means a full Supplement Facts panel: every ingredient named individually, each with its own specific milligram amount, so buyers can research and compare against clinical research.
A gap worth recognizing
Some products claim "no proprietary blend hiding amounts" as a marketing point, but if no ingredient names or amounts are disclosed anywhere at all, that's a different and arguably bigger transparency gap than a standard proprietary blend — at least a proprietary blend names its ingredients.
⚠ Know before you start
Before trusting a transparency claim: look for the actual Supplement Facts panel yourself, ideally before ordering, rather than taking marketing language at face value.