You can personalize the label by adding in a mobile photo, and can also choose from 16 flavors and order 6-packs or 12-packs with their custom label right from the app.

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Brian Keller, a dermatopharmacologist and executive vice president of San Francisco-based Bio Zone Laboratories, which manufactures custom private-label dermatological products, offered one possible reason.

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Fan Li, founder of online custom apparel company Blank Label, is also hesitant.

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Another company, Blank Label, also offers custom-made shirts over the web, at prices considerably below that of the previously mentioned firms.

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At the time Field had no label employees and no distribution deal, and Custom demanded that he be on the radio in September.

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"You just can't do custom full-time, " says Karl Thoennessen, whose label, Rogue Trade, also offers ready-to-wear raw denim jeans.

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Hilburn, Indochino and Blank Label selling tailored suits and shirts at a discount to conventional custom options.

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