That’s not true. You skin is a very effective barrier to almost everything. If it were true wouldn’t needn’t inject medication like insulin into diabetics, we could seemly smear it onto them!
There’s an awful lot of cods wallop talked about carcinogens and chemicals in our environment. Strawberry jam could cause cancer if it were rubbed into ones retinae every day for six months but we don’t and eating it on scones (hmmmm…scones) is just fine. We have two organs that get rid of toxins: liver and kidneys and they’re very efficient at their job unless we bugger them up with alcohol! Also remember that we live with loads of chemical everyday from the perfumes we use to the cleaning products we use in our houses to the plastics all around us that leach thalates into our living spaces.
With the greatest of respect, jen_jen, whoever told you that putting things on your skin was causing you too lose the use of your legs was ill-informed to say the least. If you are experiencing muscle weakness then please see a medical practitioner as soon as possible as this is a very worrying symptom of several diseases.