If you were stranded on a desert island and could only bring ONE product with you, what would it be? MODERN readers share their must-have product for traveling here, there, and EVERYWHERE (that can fit in a carry-on...under 3.4 oz of course!)

"Moroccanoil travel-size oil!!! Essential for hair and body!" -sydneyannlopezhair

"R+Co Death Valley because it’s perfect for on the go touch-ups." -badwolfstudio

"Matrix Miracle Creator Spray! I love all things Matrix and this spray makes my hair so soft and keeps the shine high! It's a MUST have!" -hairbyphephe

"Dermalogica Pre-Cleanse Balm travel size is my go-to product to help remove environmental dirt and keep my skin lightly exfoliated with the baby face mitt." -kendramedeiross

"Love Sexy Hair’s travel sizes. Healthy Sexy Tri Wheat Leave in and Healthy Sexy Love Oil!! Can’t leave home with out it!! I even carry a travel size in my purse." -shearworkbyangela

"Kevin Murphy Fresh.Hair travel size. I went on a three-week cross-country road trip in my two-door Wrangler, and had limited shower availability. While I didn’t particularly care what I looked like, touring national parks and such, being a hairdresser I like to look somewhat presentable. This is the ONLY dry shampoo that (I kid you not) has allowed me to go ELEVEN days without washing and STILL look like my hair is decently clean!! It didn’t feel awful either. And it smells so good you would have no idea I held out that long!" -thehairfaerie

"Bumble and Bumble Pret a Powder! I love that it’s a powder and not an aerosol so even the travel size bottle lasts forever. It absorbs oil but still leaves the hair feeling clean and fresh. It also adds volume and just enough grip to help a messy bun or ponytails stay in place all day while traveling!" -_tldesigns

"Living Proof Body Builder Spray!! It is an adjustable body spray and delivers extremely soft body with low hold up to heavy texture with medium hold! Perfect for anybody, any occasion. And it smells so fresh! Easy for behind the chair or personal use. No skill level required! Officially my ride-or-die product forever!!" -brianaleabeauty

"Amika Perk Up dry shampoo travel size! I can’t go on a trip without it! I may not have to wash my hair the whole time I’m away if I have that with me!" -annasteelehairstylist

"Redken One United 25 Benefits leave in conditioner spray is an amazing product to hang on to if you are on vacation, out of the pool and your hair gets tangled, dry, and smells like chlorine--a definite comb-through must-have after towel drying. Leaves hair feeling like silk and smells great! Travel size fits perfect in your purse or your pocket. " -ginaditusa

"L’anza Lustrous finishing spray!!! For the girl on the go, the spray stick hairsprays keep you voluminous and protected in any environment. It has an amazing hold but is still not sticky, and the shine is totally worth the purchase!" -beautyb.wilder

"KMS makeover spray! It’s the perfect dry shampoo and when traveling usually I’m out from morning till night so it’s a great refresh to my look. Fits in my purse, smells great and gives me lift." -jjghodges

"Incredible Milk by MilkShake. It’s an intense leave-in spray mask hair treatment that performs twelve actions: protects hair from UV rays; repairs all hair types; maintains color; protects from heat; detangles; maintains hair style; adds maximum shine; creates body and volume; controls frizz; banishes and prevents split ends; easy straightening; smoothes the cuticle." -carms.b