Which is the LAST sentence of the paragraph?

Rearrange the following six sentences a, b, c, d, e and f in the proper sequence to form a meaningful paragraph; then answer the questions given below them.
a) “The bigger concern is that no cosmetic or beauty product ever carries information on how much or how often it needs to be used.” He says.
b) Since we now think of besan-based scrubs as a weekend luxury, it is important to look into the kind of lab-made chemicals that go into most of these products, and understand what we are letting into our bodies.
c) Among the innumerable beauty blogs and tutorials, it is rare to find one that lays emphasis on the most important part of the process — the making of the commercial beauty product and the way our body ‘consumes’ it.
d) In the US too, the Food and Drug Administration does not have the legal authority to test cosmetic products.
e) In India, it is required to label the ingredients, but no mandatory testing is specified.
f) Toxicologist Prof Alok Dhawan, Director, CSIR-Indian Institute of Toxicology Research, says that any chemical, beyond a certain limit, is toxic.