New Skincare Products? Here’s Why You Have to Do a Skin Patch Test

So after the excitement of receiving your first order of Corium Skincare products – we know the first-time user euphoria that THAT Corium Box can give you – the next step is to do a skin patch test.

So, here is the really boring part… yes, you read correctly “boring”. We would advise that you do a skin patch test to ascertain your compatibility with your new skincare products.

benefits of a Skin Patch Test

“Patch testing is important because there are a number of allergens in products that can cause what’s called ‘allergic contact dermatitis,’ otherwise known as an itchy rash,” explains New York-based dermatologist Dendy Engelman. I’s important to conduct a patch test to determine your skin’s compatibility and tolerance for a new skincare product. Do not skip this step.

So, you’re probably wondering – how do I even go about conducting a patch test? Don’t worry, we’ve got you. The two main things you should be testing for are sensitivity, and breaking out or clogged pores.

HOW TO Test for Sensitivity

Ideally, you should test on two different parts of the body for sensitivity towards a new skin product. The first area should be somewhere concealed, and the second should be on the area that you’ll be using the product.

If it’s a face product, we’d  recommend testing on the cheek or chin area – both of these have a higher amount of oil glands, and the product is able to penetrate deeper into the pore lining. For a more hidden position, test the product behind the knees, on the belly, and on the upper arms. To test, apply a tiny amount of the product onto the skin. An initial reaction can occur 24 to 72 hours later, however we would advise testing for a full week to observe sensitivity.

HOW TO Test for breakouts

Patch testing for breakouts should always be on the cheeks and chin as these areas will be the first to show up blemishes due to the higher concentration of oil-producing glands. Product-related breakouts will appear in the first week of usage.


What to look for

Adverse reactions can be in the form of a rash, redness, feeling of tightness or excessive dryness, increased oil production, and breakouts. Major reactions will be visibly noticeable, and we advise the immediate discontinuation of the new product. Mild reactions may be in the form of pimples, whiteheads or blackheads (evidence of blogged pores), and which case we also strongly advise discontinuation of use. A normal reaction means that no adverse reaction occurs and the skincare product does what it promises to do.

[Sources: Renee Rouleau,, Medical Dermatology & Cosmetic Surgery Centers]




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