Finishing serums are the less talked-about final stage in any complete lux skincare routine, going on right before or after your sunscreen. They are formulated to sit on the surface of the skin rather than penetrate deeply like standard treatment serums, and target concerns like acne, pigmentation, dehydration, or aging using active ingredients. Their general role is to support the skin barrier and create a protective, breathable layer that helps everything underneath work flawlessly.

Most finishing serums on the market are essentially glow products. They may rely on silicones or synthetic polymers to smooth the skin temporarily. While not harmful, the effect is cosmetic and short lived. Biologique Recherche finishing serums are different in that their formulas are carefully created to produce long-term results, with enough variation to provide intensive care for all skin types and concerns.

These finishing serums fit right into your AM and/or PM skincare routine, intended for use at the end of your routine after applying any lotions, toners, skincare masks, quintessential serums and face creams. You also have the option to use it as a second-to-last step right before applying any creams you’d like to incorporate, but they work just as well after. The finsihing serums also provide an excellent base for makeup.

Yes, these products are especially well suited for use under makeup. Because they are designed to sit lightly on the surface of the skin, they smooth texture and help makeup apply more evenly without pilling, sliding, or breaking down throughout the day. Unlike many priming products, Biologique Recherche finishing serums remain breathable and skin supportive rather than silicone heavy. They help maintain hydration and comfort under foundation, which keeps makeup looking fresh longer and prevents any caking or patchiness shine as the day goes on.

Less really is more in this case. These formulas are designed to sit at the surface of the skin, so using too much can leave the skin feeling heavy or slick without adding extra benefit. One to three drops is enough for the entire face for most users. Warm the serum between your fingertips and gently press it into the skin rather than rubbing. This helps create an even, breathable layer that supports hydration and barrier protection without disrupting the products underneath. If your skin is oily or congestion prone, start with one drop and adjust only if needed. Drier or more stressed skin may prefer two to three drops, especially in cold weather and/or dry climates.

BR’s wide selection means there’s always a solution no matter your skin type or concern. Generally they work well with all skin types, but you can find a more tailored guide below:

Mature/Aging: Le Grand Serum supports anti-aging by reinforcing the skin barrier, reducing inflammation and dryness, and protecting against daily oxidative stress that accelerates collagen breakdown.

Oily Skin: Serum Silk Plus is good for oily skin because it hydrates without adding heaviness, helping prevent the dehydration that often triggers excess oil production. Its lightweight, smoothing finish helps control surface shine while keeping the skin balanced and comfortable all day.

Dry Skin: Serum Yall-O2 is an ideal facial serum finisher for dry skin because it helps draw in and retain moisture while supporting oxygenation at the surface. This improves the resilience of your skin while making your skin look smooth and fresh.

If you are looking for a true hyaluronic serum from Biologique Recherche, Serum Yall-O2 is THE standout option. This hyaluronic acid serum focuses on deep hydration and surface oxygenation, helping skin retain moisture, look plumper, and feel more comfortable throughout the day without heaviness. It is especially effective for dehydrated, dull, or stressed skin, including oily skin that lacks water rather than oil.