There are two more ingredients in the Replenix Brightening Boost that work by inhibiting the activity of tyrosinase, arbutin and arctostaphylos uva-ursi leaf extract, which are both derived from the common bearberry plant. This formula also contains Morus alba (mulberry) bark extract, which is also a rich source of arbutin. A final key ingredient in the Replenix Brightening Boost is hexanoyl dipeptide-3 norleucine acetate, a synthetic peptide that helps skin’s surface shed properly and speeds up surface renewal. It works by competing with proteins on the skin’s surface that, when damaged, can prevent exfoliation. Ultimately, this peptide helps to refine skin’s appearance by smoothing the surface so it’s better able to reflect light and also maintain hydration, leading to fresher, brighter looking skin.

Replenix Power of Three Cream also includes a high concentration of squalane. Your skin contains its own version of squalane known as squalene (note the e). Squalene is the biochemical precursor to cholesterol and the whole family of steroid hormones in the human body. It is produced by the oil glands in the skin, and plays an important role in skin lubrication and protection. However, the amount made and retained in the skin decreases over time. It peaks in our teens and then starts to decline in our 20’s, leaving skin rough, dry, and vulnerable. Since squalene is very unstable, squalane is used in skin care products because it is a saturated and stable hydrocarbon that mimics squalene and helps to replenish the skin’s barrier. Lastly, Replenix Power of Three Cream provides you with several skin-soothing ingredients, such as cucumber fruit extract, bisabolol, and chamomile flower extract, which should help to calm inflammation and reduce redness.

Replenix Pure Hydration Hyaluronic Acid Serum contains three different salt forms of PCA (pyrrolidone carboxylic acid), including sodium PCA, zinc PCA, and copper PCA. PCA is a component of the skin’s natural moisturizing factor (NMF). The NMF can become depleted with age and also from routine exposure to sensitizing ingredients like drying cleansing agents and denatured alcohol. This leads to visibly dry, tight-feeling, flaky skin. Using ingredients that replenish the NMF, such as these salts of PCA, can improve the skin’s hydration. Lastly, Replenix Pure Hydration Hyaluronic Acid Serum provides protection against free radicals with antioxidants from white tea extract, ergothioneine, and glutathione.