Tinted Moisturizer: "I do not like to wear foundation when I workout because -- let's be realistic -- it clogs your pores and you sweat it off," she says. Which is why she relies on chemical-free, water-resistant Image Skincare Daily Tinted Moisturizer SPF 30 to moisturize, cover redness and get in her sun protection.

Lip Balm: "This organic chapstick gives you a little color and a lot moisture all in one," she says about Badger Balm Natural Mineral Color Tint in Rose Tourmaline.

Dry Shampoo: "If I washed and blow-dried my hair every time I worked out, I would live in the bathroom," Scherdin says. Like Gelula, she keeps SkinnySkinny Dry Shampoo on hand to get rid of oil after a tough workout.

Liquid Liner: I have never found a waterproof liquid eyeliner that I liked before [Eyeko Visual Eyes Liquid Eyeliner]," she raves. "It does not smudge if you go swimming, and it is really easy to apply."

Mascara: She also claims that she never leaves the house without Tarte Lights Camera Lashes Natural Mascara, because the formula is made with natural ingredients and doesn't clump or flake.

Headband: Becker calls the Sparkly Soul Headband a "must-have" for both teaching and taking classes at Physique 57. "This non-slip band really holds back my hair without giving me a headache," she says. Plus, hello? They're pretty.

Faux Tanner: Another must-have is Dennis Gross Alpha Beta Glow Pads, which she uses post-workout. "They not only exfoliate, [they] also leave you with a sun-kissed glow."

Nail Polish: Lastly, she always carries Essie Nail Polish in Sugar Daddy (a barely-there pink) in case of any pre-class mani chips.

Sunscreen: "The intense Miami sun calls for serious skin protection," Jacko says. She loves Elta MD UV Lotion because "it absorbs instantly and provides a flattering, dry finish."

Lip Balm: Likewise, her lips need protecting, too. Jacko always reaches for Isola Mint Organic SPF 30 Lip Balm. "It is wonderfully moisturizing and provides sun protection," she says.

All-Day Lipstick: If she needs a little lip color post-workout, she turns to Nars Lipstick in Christina (a shimmering golden raspberry), which she says has "the best saturation of color, is the longest wearing, and goes with everything. It's my go-to lipstick."

No-Fail Antiperspirant: To keep dry during intense sweat sessions, Jacko uses Donna Karan Cashmere Mist Anti-Perspirant. "I have tried every antiperspirant on the market. I always go back to this one," she says. "It keeps me the driest of any I've tried, and the powdery scent is beautiful without being overpowering."

Barefoot Socks: "Bella Toesox are a thing of beauty for your feet at the barre," she says. "They have a beautiful ballet-inspired design and rich colors and patterns that dress up anyone's plié."

A Gentle Cleansing Regimen: An arsenal of Pratima Spa's face cleanser, oils and SPF have set up permanent residence in Starkey's bag. "I literally don't leave home without these Ayurvedic skin care products because as a SoulCycle instructor who is constantly sweating, I need a cleansing regimen that's gentle enough to cleanse my face multiple times a day but strong enough to stave off congested pores that inevitably -- for me -- turn into breakouts if not militantly cared for," she says.

An All-Natural Deodorant: "I believe the body should perspire when it needs to perspire, so I avoid antiperspirant at all costs," she says. That's why she opts for Weleda Deodorant in the citrus scent. She raves that the all-natural formula "makes your sweat smell good (relatively speaking)."

A Nourishing Cuticle Cream: One of Starkey's biggest pet peeves: raggedy fingernails. She relies on Burt's Bees Cuticle Cream to keep her digits in tip-top condition. As fitness instructors ... we communicate so much with our hands, and sometimes there's no time for a proper manicure, so the cuticle cream is a quick fix for any unsightly, dehydrated nails and cuticles," she explains.

A Signature Scent: She's worn Hermès Eau des Merveilles (a woodsy and citrusy scent without a hint of florals) for seven years, and swears it's no exaggeration that she's complimented on it at least once a day. "I keep one bottle in my makeup bag and one at home so I'm never without it, because let's be honest: smelling good is super important!"

Concealer: "I never wear makeup when I teach since my skin is so sensitive, but sometimes a dab or two of [Make Up For Ever Lift Concealer] transforms my face from tired to alive right before class--or anything else my day holds," she says.

Long-Lasting Liner: Stone will not be without eyeliner -- specifically Revlon Waterproof Liner -- in her bag, to make her eyes really pop after a workout session.

Throwback Lip Balm: The old school find in her bag? Carmex. She uses it on the inside of her lips as well as the outside. "It's a little trick a lot of fitness professionals use because it causes your upper lip to naturally slide up which makes you automatically smile. Happy Teacher equals a happy class."

Lotion "I always have lotion in my bag, I workout a ton and I need to keep my body moisturized," Stone says. Her favorite is Origins A Perfect World.

Razor: "As a fitness pro I wear a ton of tank tops," she says. Hence, the continual presence of a BIC Disposable Razor in her gym bag.