Ellipses. 1  An ellipsis is a set of three periods ( . . . ) indicating an omission. Each period should have a single space on either side, except when adjacent to a quotation mark, in which case there should be no space. 2  In informal writing, an ellipsis can be used to represent a trailing off of thought.
PCA SkinÂ® products that focus on a condition and are used with one another ensure improvements in your skin's look, texture and feel. PCAâs broad spectrum of SPF protection products are recommended by the Skin Cancer Foundation.
1. What is it: Sodium PCA is short for sodium pyroglutamic acid. It is the sodium salt of pyroglutamic acid, a derivative of the amino acid proline. Sodium PCA is considered to be a synthetic chemical.It is used as a humectant and skin conditioner in cosmetic formulas.. What is it: Sodium PCA is short for sodium pyroglutamic acid. It is the sodium salt of pyroglutamic acid, a derivative of the amino acid proline. Sodium PCA is considered to be a synthetic chemical.