I'm very happy with this product and use it many times a day. Actually, the little jar sits on my desk next to my mouse. I put it on as soon as I feel a dry cuticle beginning to hatch. Somehow this particular oil has a good effect whereas others I tried did not have almost any..... ... Room for improvement: This product is only sold as a set of 4 but it arrives as 4 single jars with no box or pouch. Why is it called a 'set?'