The most consistent way to purchase this soap is through secondary marketplaces and specialty vendors that sell hotel amenities:
The best source for both individual bars and "lots" (bulk packs). You can find various sizes, including the common 1 oz travel size and 1.25 oz bars. where to buy neutrogena french milled bath soap
A retailer that specializes in hotel-quality bedding and bath products, frequently carrying Neutrogena bar soap lots. Buying Tips The most consistent way to purchase this soap
Finding has become more difficult recently as it is primarily produced for the hospitality industry (hotels like Hilton) rather than as a standard retail item. Buying Tips Finding has become more difficult recently
Because it is not a "core" consumer product, you won't typically find it on the shelves at major pharmacies like CVS or Walgreens, but there are several reliable ways to get it online. Where to Buy
Periodically lists the soap through third-party sellers, often in multi-packs or sets. Specialty Liquidators: Petit Maple: Often stocks 24-packs of the 1 oz bars.
Because it is a hospitality product, most listings are for travel-sized bars (0.8 oz to 1.25 oz). Read the description carefully if you are looking for a full-sized bath bar.