Dermalogica Biolumin-C Vitamin C Dark Spot Serum, 2 fl oz — Brightens & Firms with Peptide + AHA

Dermalogica Biolumin-C Serum is a high-performance vitamin C serum that exfoliates, brightens, and firms skin while helping reduce the appearance of dark spots and fine lines.

This award-winning serum combines stabilized vitamin C with a peptide complex and gentle AHA exfoliant to support a clearer, more even complexion. Lightweight and fast-absorbing, the formula targets visible signs of aging and uneven tone without heavy oils, making it easy to layer under your moisturizer and sunscreen. Below you'll find key answers to common shopper questions about how the product works, how to use it, and what results you can reasonably expect.

How does this serum improve skin tone and reduce dark spots?

Biolumin-C Serum uses a form of vitamin C to brighten dull-looking skin and help even tone over time. Lactic acid provides mild exfoliation to accelerate surface cell renewal, which can reduce the appearance of discolored patches when used consistently.

• Stabilized vitamin C supports skin radiance and reduces visible dark spots.
• Lactic acid gently exfoliates to smooth texture and reveal fresher skin.
• Sophora japonica flower extract supplies antioxidant protection against environmental stressors.

Will this serum help with fine lines and firmness?

The formula pairs vitamin C with palmitoyl tripeptide-5, a peptide designed to help support skin elasticity and firmness. While topical products cannot stop aging, regular use can visibly soften the look of fine lines and give the complexion a firmer-looking appearance.

• Palmitoyl tripeptide-5 supports the skin’s structural appearance for firmer-looking skin.
• Hydrating ingredients, including chia seed oil, plump the skin surface to reduce line visibility.
• Daily application helps maintain a smoother, more resilient-looking texture.

How do I add Biolumin-C Serum to my skincare routine?

Apply a few drops to cleansed, dry skin each morning and evening before moisturizer for best results. Because it contains lactic acid, follow with sunscreen during the day to protect newly revealed skin from UV exposure.

• Use after cleansing and any water-based treatments, before creams or oils.
• Two to three drops are typically enough for full-face coverage.
• Apply daily; in the morning always finish with broad-spectrum SPF.

Is this serum suitable for sensitive or acne-prone skin?

The serum is formulated to be fast-absorbing and non-greasy; however, the inclusion of lactic acid means some sensitivity is possible for reactive skin types. Patch-test before full-face use and introduce it gradually if you have known sensitivity to AHAs or vitamin C derivatives.

• Consider starting every other day to build tolerance for AHAs.
• Patch test on the inner forearm for 48 hours if concerned about reactivity.
• Discontinue use if persistent irritation, redness, or burning occurs.

Who is this for? Dermalogica Biolumin-C Serum is aimed at anyone seeking brighter, more even-toned skin who wants a lightweight, multi-benefit product that also addresses early signs of aging. It’s well suited to normal, combination, and dry skin types looking to reduce the look of dark spots and improve texture; those with sensitive skin should proceed with a patch test and gradual introduction. Use alongside daily sun protection and a consistent skincare routine for optimal visible results.

Ingredients

Water/Aqua/Eau, Glycerin, Butylene Glycol, Ethoxydiglycol, Lactic Acid, Salvia Hispanica Seed Oil, Sodium PCA, Palmitoyl Tripeptide-5, Sophora Japonica Flower Extract, Ascorbyl Methylsilanol Pectinate, Sodium Hyaluronate, Tocopherol, Dipotassium Glycyrrhizate, Aminopropyl Ascorbyl Phosphate, Trehalose, Polyacrylate-13, Propanediol, Citrus Paradisi (Grapefruit) Peel Oil, Helianthus Annuus (Sunflower) Seed Oil, Polyisobutene, Methylpropanediol, Chondrus Crispus (Carrageenan), Pentylene Glycol, Glyceryl Polyacrylate, Caprylyl Glycol, Ethylhexylglycerin, Tetrasodium Glutamate Diacetate, Xanthan Gum, Polysorbate 20, Limonene, Sodium Hydroxide, Phenoxyethanol, Sorbitan Isostearate