You may try using a foundation that is one shade lighter than your normal shade in the same brand or switch to a brand that has a wider variety of shades. Make sure you test the foundation properly on your face to ensure the shade is not too light and will still blend well into your skin.
You may opt for a foundation that does not contain SPF so you can avoid a reaction on your face that can lead to an orange tinge. Instead, you may invest in a setting powder that contains SPF so your skin is still protected from the sun but it is not at risk of turning orange.
You should test out all of your makeup products, from foundation to primer to eyeshadow, before you commit to using them on a day to day basis. This will ensure your skin does not have a negative reaction to any of the products.
Use a clean makeup brush to apply the mattifying primer on clean, exfoliated skin. This will ensure your foundation goes on smooth and is less likely to change shades.
Once you apply a makeup primer or a face moisturizer, let the product dry. Use your fingers to lightly touch your face to make sure the product has dried before you apply any foundation. You can also use blotting paper or a clean tissue to lightly dab away any excess moisture on your face, particularly on your T-zone area. This would be your forehead, your nose, and your chin.
Try to apply one even layer of the foundation by dabbing or stippling it onto your skin. Blend the foundation in with clean fingers or a clean makeup sponge. Never sweep, rub, or smear on the foundation.
Check that your foundation is dry before you apply setting powder. Use a clean makeup brush to apply the setting powder and make sure the setting powder sits on your skin in one, even layer.
Always dab at any oily areas with the blotting papers or a clean tissue. Avoid rubbing or scrubbing any oily areas, as this will only ruin your foundation and can lead to breakouts or irritation on your skin.
Skin that is dehydrated can end up producing too much oil, leading to oily skin. Oily skin can then cause a reaction with foundation that can lead to a change in the shade.
Finding the right foundation for your skin can be tricky, so do not be afraid to ask a salesperson for help. You may also want to ask for samples of different foundations and test them all out to find the right brand and shade for your skin type.