What happens if you add too much laundry detergent?

We constantly add too much laundry detergent before we know it because we are afraid that the clothes will not be washed cleanly and the clothes don't smell good.
The more laundry detergent you pour, the more foam.
It does not increase the cleaning ability.

The cleaning power will be saturated if the laundry detergent reaches a certain amount.
Excessive laundry detergent is a waste.
It will also affect the drain function of the washing machine.
It may also remain on clothing, causing yellow spots or stiffness.
It can even cause skin allergies. Excess residue makes your washing machine's inner tub sticky and breeds bacteria. It is not worth it.