I do other things besides write articles for SpecialChem. I do have regular clients that I formulate custom cosmetics for. As an experienced formulator, I must be very aware of the fact that the formulas for the products I provide must be safe for the consumer or the end-user. Nowhere is this more important than in the preservation of cosmetics and personal care products. Don't let anyone tell you that cosmetics can be preservative-free.
I routinely use Parabens in my formulations where ever I can. The reason for this is that Parabens do work very well in preserving my products. Whether it is an oil phase or a water phase, there is a Paraben derivative that will work in that particular capacity. But recently, I have had numerous clients request Paraben-free formulations. That makes life a little more difficult. The formulas that were once well-preserved with Parabens now have to be preserved with additional preservatives, sometimes more than one or two additional to get the job done, without over-preserving the product.