Stasis dermatitis is a diagnosis which needs to reviewed. The cause must be treated first because dermatitis is secondary
You have mentioned 2 products....see moisturex cream has urea and lactic acid and is to be used on soles not lower leg or ankle which might be causing your burning sensation
Moisturex soft cream on the other hand is OK with white soft and light liquid paraffin but there is acoorecr way to apply it
Cetaphil prourea lotion comes with either 4% urea or 10 % urea however...4% urea containing acts only as moisturiser and doesnot have exfloiating action
Next Steps
Donot worry...take a dermatology consult l, get a definitive diagnosis and personalised treatment plan.
Health Tips
Tip - Apply your moisturiser on slightly wet skin..preferably after taking bath within 5 minutes.
Good luck.