Polyquaternium-15 is a conditioning polymer that appeared in cell-culture studies to enhance HIV replication, unlike other polyquaterniums tested alongside it. That is laboratory evidence rather than a clinical outcome, but with plenty of alternatives available there is little reason to accept the question mark.
Look for instead: A formula using a different polyquaternium or no conditioning polymer at all.
Most guidance suggests choosing a formula without it for intimate use. Polyquaternium-15 is a conditioning polymer that appeared in cell-culture studies to enhance HIV replication, unlike other polyquaterniums tested alongside it. That is laboratory evidence rather than a clinical outcome, but with plenty of alternatives available there is little reason to accept the question mark.
Its role is preservative. Has a well-documented downside for intimate use; most guidance suggests choosing a formula without it.
A formula using a different polyquaternium or no conditioning polymer at all.
Yes. An ingredient list shows what is in a formula, never how much, and two products sharing an ingredient can behave completely differently. The product's own label and instructions always take priority over a general category rating.
Educational information about ingredient categories only — not medical advice, not a product-safety verification, and not a claim that any formula is safe or unsafe for your body. An ingredient list shows what is in a product, never how much. A product's own label and instructions always take priority. Stop and seek care for pain, bleeding, allergic reaction, or worsening symptoms.