100%
of the original's ingredients
Same formula
Why it's a dupe
- Both are cleansers.
There is no exact dupe for BIOTHERM BIOSOURCE Self Foaming Cleanser. The nearest formula is BIO SOURCE Self Foaming Cleanser (48% match), which shares all 10 key ingredients (including Copper pca, Lactobacillus ferment and Magnesium pca).
Match % combines shared ingredients, the first five ingredients, shared actives and hero ingredients, irritancy (lower counts in the alternative's favour), texture and body area. Only products in the same routine step are compared.











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Note: Ingredient concentrations are estimated; products aren't lab-tested. A close match doesn't guarantee the same feel.