Prevention is better than cure.
Many factors can cause sensitivity to mascara. Always try to be sure of the products you use and look for a mascara that is allergy-tested, fragrance-free, and ophthalmologically tested. A track? All Clinique eyelash masks pass this allergy test, making them one of the most recommended by dermatologists and ophthalmologists. Each formula undergoes 7,200 tests and if there is a single reaction, the product is reformulated. But the surprising thing about all this is that you still have a sensitivity to mascara, Clinique will continue to surprise you with new formulas. Get it all with Lash Power Mascara Long-Wearing Formula, a high-tech gel formula that lengthens the lashes does not dissolve or stain, is resistant, and even waterproof in cold water, but it is easily removed with warm water.
Make a test before use.
Just as dermatologists recommend trying a new hair dye or depilatory cream on a small area of skin first to see if you develop an allergic reaction, do the same with your mask. Apply a small amount to the outer lashes and wait a few hours. All good? Add the product to all the lashes for a correct application and obtain incredible results.
Don’t get too close.
When applying the mascara, try not to apply it to the root of the eyelashes, avoiding contact with the eyelids. Gently move and twist the head of the applicator brush and spread the mascara on the lashes out towards the ends. Think you can’t use it on your lower lashes? Think again. High Impact Mascara has a small brush with which you will obtain perfect precision and the formula of advanced thermal technology defines the lashes 
Avoid nail polish.
You would never suspect that your ideal manicure could be the reason why your eyes are irritated, but it is entirely possible. There is an ingredient, often found in nail polish, that emits fumes that activate sensitivity in the eyes. Try not to wear makeup on your nails for a while, while wearing mascara, to see if your eyes are less irritated.
Stick to fragrance-free creams.
Dr. argues that fragrance is one of the biggest eye irritants out there, so be especially careful to avoid scented eye, face, and hand creams.
Remove carefully.
Whatever you do, avoid rubbing your eyes while wearing mascara during the day and also when you remove your eye makeup (which you always do before bed, right?. Dr. comments that the less the eyes rub, the better.” Eliminate mascara and eye cosmetics in discrete strides to limit scouring,” she clarifies. First, impregnate a cotton pad with a dual makeup remover, without emulsifier, such as Take The Day Off Makeup Remover For Lids, Lashes & Lips. Next, gently press on your lashes for 10 seconds, before lightly removing makeup from the lids. This will give your makeup remover time to break down the pigments in the mask, which means you need less scrubbing with the cotton to get the job done right. Once you have removed all the mascara, remove the rest of your makeup.
Live by the 6-month rule.
Do not forget that the mascara has an expiration date. You should change it when six months have passed since its opening and start using a new one.