1. Stuff for Sun protection – this actually goes without saying! Shades/Cap/wide-rimmed hats/clothes that cover you well… And if you like to sport that skin, you can’t forget a sun-block. You would need to go in for lotion based sunscreen for your body since it’s easier to apply and gel based ones for the face as they are more aesthetically pleasing. Look for anything with an SPF 30 to 50 and a high critical wavelength (if in doubt, your dermatologist can help you choose one for your skin type). Water-resistant & very-water-resistant types of sunscreen would help you survive the UV despite sweat and water sports. Repeated application every three to four hours is the key! 
  2. Moisturizer – yes, this is important, especially if you have dry skin. If your skin is very dry, you can apply a coat of moisturizer before applying sunscreen. Even if your skin is not very dry, would be beneficial to apply a relaxing coat of moisturizer after a long day of trek or one at the beach. Make sure you have first cleansed the sweat off with a freshening face wash. A word of caution about the use of moisturizers among those who suffer from acne often!
  3. Insect repellent – Be it a jungle resort or a pool side dinner, insects and resultant skin conditions (not to forget dengue) can be a spoiler in destinations in India and abroad.  There are many over the counter insect repellents available, which are reasonably safe for use even in children. You have ones which are of not-so-bad fragrance and not greasy as well. Of course just make sure that you are not allergic to any of them in particular.
  4. Wet wipes & cleanser/face wash – Wet wipes should preferably be like the cetaphil cloth wipes which are soft, not fragrant and do not irritate sun burnt or sensitive skin. They are indeed refreshing after a hot summer holiday destination. A cleanser/face wash will get you rid off adherent dust and sweat giving you a rejuvenated feel and keeping your skin healthy.
  5. Antihistamine - somehow I have always found it to be the most useful emergency drug to carry on a trip apart from paracetomol. Any itchy rash/insect bite/ hives or urticaria/food allergy and even symptoms of common cold – its quite helpful and relieving. You could discuss with your physician /dermatologist as to which prescription antihistamine to carry and the right dose for you. HAVE A GREAT HOLIDAY!!!