I've gotten pretty good at battling 90%+ humidity (thank you Hong Kong!). Here's a list of travel essentials I make sure to pack when I'm hitting up a resort destination where humidity, heat and I are pretty much BFF:
Muji Gel Cleanser - low-foaming and fragrance free, this cleanser is good for super sensitive skin and doesn't dry you out. With that in mind, don't expect it to smell like roses!
Primera Avocado Cleansing Oil - I use this mainly to wash off the day's worth of sunblock. It's heavy without feeling greasy, but make sure you apply to a dry face before adding water to emulsify!
Innisfree Rice Sheet Mask - I'm addicted to Korean sheet masks, and if I wasn't so lazy I'd do these all day everyday. They're easy to travel with and perfect for revitalizing your face after baking in the sun.
La Roche Posay Gel-touch Sunblock - By far the lightest sunblock I've come across, it barely feels like you're wearing anything which is just what you need when you're sweating 320942509235 times a day.
Primera Gel Cream - A lightweight gel cream that won't irritate sensitive skin and is light enough for 100000% humidity.
Aesop Rind Concentrate Body Balm - Trust me, you'll NEED this after your body's been stripped of every ounce of moisture thanks to the sun and the hardcore scrubbing you do to wash off sunblock. And this one smells super zesty!
Nars Pure Radiance Tinted Moisturizer - Perfect for summer vacationing because it's got SPF!
Shiseido Perfect Mascara - The best part about this mascara is it washes off with warm water, and when you go sweeming with it, it doesn't give you panda eyes like most mascaras do (even "waterproof" ones).
Tom Ford Brow Sculptor - The most vital part of my makeup routine, because without it my brows are pretty much non-existent.
Triangl Black neoprene bikini, Shiseido Sunblock, straw flat-brim hat, Ray-Ban sunglasses, iPhone, Thai sodaaaaa