Exfoliating doesn't mean stripping!
While it's true that the skin needs a boost in microcirculation and cellular renewal to fully absorb the active ingredients in skincare products, what it really demands is gentleness. It is unnecessary to scrub too hard or insist during the application of your exfoliant, as this is not a very good idea. Firstly, because the result will be counterproductive, as your epidermis has a very fragile skin barrier that protects it and will struggle to withstand your harsh movements. But also, and most importantly, this method will be of no use if you have blemishes and want to get rid of them. If you scrub the exfoliant grains too hard against your skin, you will create micro-lesions within the blemish itself and release the bacteria that are lodged there. The result is: A colony of microorganisms can develop and give rise to new blemishes.
Similarly, while exfoliation is beneficial for rejuvenating the skin's glow and eliminating dead cells and other embedded impurities, it's better not to exfoliate too often. Indeed, skin that is exfoliated too frequently will become thinner, more fragile, more sensitive, can damage quickly, and consequently, will start to produce an excess of sebum as a defense mechanism, which will inevitably lead to an acne outbreak. Performing two exfoliations per week is already too much, especially if you have dry or sensitive skin and you are using a grainy scrub. Beyond this, you risk stripping your skin.
Furthermore, scrubs should not be done at just any time. It is more prudent to do it in the evening to allow the epidermis time to regenerate during the night. Indeed, the scrubbing process can disrupt the hydrolipidic film that protects you from external aggressions. As a result, the skin is less exposed to stress and pollutants, and it won't risk being "suffocated" by makeup. Additionally, in the summer, space out your scrubbing sessions and plan them a few days before prolonged sun exposure, as the skin needs to thicken to protect itself from the sun, which can lead to the appearance of pigmented spots and wrinkles.