A blush with death : a bath and body mystery / India Ink.

Enhanced descriptions from Syndetics:

In Gull Harbor, Washington, the local bath and body store-Venus Envy-takes care of all the town's beauty needs, from custom-blended oils to relaxing spa services. And behind the counter sits Persia Vanderbilt, the niece of the proprietor, who has a nose for mixing scents-and a mind for solving murder . . .

There's only one #1 . . .

There's a new makeover maven in town, and she spells big trouble for everyone at Venus Envy. Bebe Wilcox has just unveiled her own boutique, and she won't stop until her shop has put everyone else out of business. Nothing is out of bounds, from stealing fragrance recipes to computer hacking and sabotaging supplies. But when one of Bebe's pushy saleswomen ends up dead, the stakes become much more dangerous. Staging a public falling out with her Auntie, Persia gets hired at Bebe's Boutique and begins snooping for evidence of wrongdoing. But can she find the goods before the killer decides to find her?