It sounds like you're asking whether a specific bath liquid is considered a pharmaceutical product available for purchase. Generally, bath liquids are classified as personal care or cosmetic products rather than pharmaceutical products, unless they contain active medicinal ingredients intended for treatment of a medical condition.

If you have a particular bath liquid in mind, checking the product label or packaging for any medicinal claims or active pharmaceutical ingredients can help clarify this. For accurate information and to ensure safety, you might want to consult a dermatologist or a pharmacist who can guide you based on the product details.

If you need further assistance or have concerns about skin conditions or treatments, please consider consulting a dermatologist.