A serum is typically a lightweight skincare product designed to deliver selected ingredients as a targeted step within your routine. Unlike a cleanser, moisturizer or sunscreen, a serum is often chosen according to a more specific goal such as hydration, radiance, uneven-looking skin tone, excess sebum or visible signs of ageing.

That does not mean everyone needs several serums. In many cases, one well-chosen serum is a better starting point than layering three or four different active formulas. DS V-LINE offers different serums for different skin needs, which makes the concern you want to address the most useful place to start.

When skin feels tight, dehydrated or less plump, hydration is usually the most logical priority. This can apply to dry skin, but also to combination or oily skin because dehydration refers to a lack of water rather than a lack of oil.

The DS V-LINE Moisturizing Hyaluronic 3D Serum is the most suitable DS V-LINE serum when hydration is the main goal. Its formula uses hyaluronic acid with varying molecular weights to support the skin's moisture balance, while its lightweight texture makes it easy to incorporate before moisturizer. DS V-LINE also positions the serum as a dedicated hydration step within its existing skincare routines.

Best suited for: Dehydration · Tight-feeling skin · Lack of moisture · Skin that needs additional hydration

If your skin regularly feels dry or tight despite using moisturizer, choosing a hydration-focused serum before introducing stronger active ingredients is often the simpler approach.

Oily skin does not necessarily need to be stripped of moisture. Instead, look at the concerns that accompany the oiliness. If excess sebum appears together with visible pores, blemishes or an uneven-looking complexion, a targeted balancing serum can make more sense than simply choosing the strongest drying product.

The DS V-LINE 45 Brightening Niacinamide Serum is particularly relevant here. Its formula contains 15% niacinamide and 5% glycolic acid and is positioned within DS V-LINE for concerns including uneven-looking skin tone, pigmentation, visible pores and sebum balance. Because it also contains glycolic acid, it should be considered an active treatment rather than treated like a basic niacinamide-only serum.

Best suited for: Oily-looking skin · Visible pores · Uneven-looking skin tone · Pigmentation · Sebum balance

This is also a good example of why choosing a serum based only on the ingredient name can be misleading. Always consider the complete formulation.

The eye contour deserves separate consideration because the skin surrounding the eyes is more delicate than many other areas of the face. A facial serum should therefore not automatically be applied close to the eyes unless the product is intended for that area.

The DS V-LINE 41 Eye Contour Rejuvenating Retinol Serum was developed specifically for the delicate eye area. DS V-LINE positions it for routines focused on the appearance of fine lines around the eyes, while its formulation includes bakuchiol.

Best suited for: Eye contour · Fine lines around the eyes · Targeted eye care

If the eye area is your primary concern, choosing a dedicated eye formula is generally more logical than simply extending a stronger facial treatment closer to the eyes.

You do not need to use every brightening product at once. A straightforward routine is often easier to maintain and makes it easier to understand how your skin responds.

Morning: Gentle Cleanser → 47 Brightening Vitamin C Serum → Moisturizer → Lumea SPF50 Sunscreen Cream

Evening: Gentle Cleanser → Targeted Treatment → Moisturizer

Depending on your skin and the products you choose, the targeted evening step might be the DS V-LINE Brightening Niacinamide Serum or, on designated exfoliation evenings, the DS V-LINE Deep Peeling Serum. Because both contain exfoliating acids, I would not position them as products that need to be used together in the same routine. The goal is a consistent weekly routine, not fitting every active ingredient into every evening. This is also consistent with DSVLINE's broader routine guidance around separating stronger treatments where appropriate.