What should be indicated on a product or product label if claiming to be suitable for acne prone skin?

The correct choice for a product claiming to be suitable for acne-prone skin is "non-comedogenic." This term specifically refers to formulations designed not to clog pores, which is crucial for individuals who are prone to acne. Clogged pores can lead to the formation of comedones (blackheads and whiteheads) and exacerbate acne, so a product labeled as non-comedogenic would indicate that it has been formulated to avoid this issue.

While being oil-free can be beneficial, not all products labeled as oil-free are necessarily non-comedogenic. Some oil-free products may still contain ingredients that could obstruct pores. Similarly, "hypoallergenic" refers to the likelihood of causing an allergic reaction, rather than pore-clogging potential, and "dermatologist tested" does not guarantee suitability for acne-prone skin; it merely indicates that a dermatologist has evaluated the product. Therefore, non-comedogenic is the most directly relevant claim for those concerned about acne-safe options.