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What they are Key Differences Feature Concentrate Isolate / Hydrolyzed % Protein by weight Typically ~70-80% protein in many WPC options. Isolate: ~90%+ protein. Hydrolyzed: can vary; often built from isolate or similar. Lactose & Fat content Higher levels of lactose and fat compared to isolate. Much lower lactose and fat (Isolate). Hydrolyzed also often very low. Digestion / absorption Good, but slower relative to more refined forms. Faster absorption/ digestion is claimed for hydrolyzed; isolate is faster than concentrate. Cost & taste Generally less expensive; taste/creaminess often better because of some fat/lactose presence. More expensive; isolate may have lighter taste; hydrolyzed may taste more bitter due to processing. Best suited for People on a budget; general muscle‐building; those without lactose issues. People who want a “cleaner” product with minimal carbs/fat/lactose; lactose intolerant; cutting phase; faster recovery. What this means for your specific labels Which one to pick? A few caveats