NECK-CARE TIP: I always tell my clients that a woman over age 28 should be using an OTC Retinol or a Retinoid, period. But an anti-aging regiment should NOT stop at the jawline. "The Face" begins at the hairline and goes down to the décolletage, including the NECK. The neck's skin is unique and requires special care. This skin is significantly THINNER than that of the rest of the body and does not contain as many hair follicles as compared to the face, which means that this skin is not receiving as much naturally produced moisture. If a client is on a prescription Retinoid (like Retin-A), I always recommend that she use an OTC Retinol for the neck only. Retinoids, can be irritating and drying to the neck...but my PRIMARY concern is the sun exposure to this area. Retinoids make the skin vulnerable to the sun, so a broad spectrum SPF (minimum 30) is essential. Most women (and men alike) neglect to apply sunscreen to the neck & décolletage during their morning routine & only apply protection to the face. Using an OTC Retinol on the neck will ensure that you're maximizing your at-home skin care regime whilst protecting this delicate and oh-so-important part of the body.