Retail is over 10% of my business. For Lashes: I sell a 'sealer' that is used 2-3 x per week, RapidLash, lash heater & hydropeptide SPF . For Waxing: detox bath gel, & a few other goodies for ingrowns & skin calming.

Most importantly, I shop 1-2 seasons ahead and rotate small gifts, candles, scarves, mittens, glitter flasks, stainless steel heart paper weight.. People like to spend money. It's plain and simple. Make it interesting and easy priced between $7-$30. (that's with a 50% markup).

Don't sweat the small stuff.