When talking to our guest about Hale & Hush skin care products, we sometimes get this question: "Why are the Rare Mandelic, Rare Retinol, and Race C Serum called "Rare"? Lets see if this explanation helps. All three are specially made for sensitive skin. The type of vitamin C used is unique as it also helps with the appearance of pore size. The rare retinal serum uses retinaldehyde which works better on sensitive skin than the other forms of vitamin A, and also helps with glycation. (Glycation is a major cause of cellular and molecular damage that occurs with aging. It is a chemical process where a sugar molecule attaches to a protein or lipid. This contributes to wrinkles, discoloration, and loss of firmness). The mandelic used is 8% mandelic with a mixture of hyaluronic, vitamin C, enzymes and lactic to not cause any irritation on sensitive skin like other mandelic serums may cause. Professional Skin Care Academy carries a complete line of the Hale & Hush pr