ELBBUB Day-Night Vitamin C & Retinol Serum Duo — Brightening Vitamin C Morning Serum + Overnight Retinol, Hyaluronic Hydration

ELBBUB Day-Night Vitamin C Serum with Retinol and Amino Acids is a two-step facial serum system designed to brighten, hydrate and support collagen for firmer-looking skin.

This dual serum set combines a vitamin C formula for daytime antioxidant protection and radiance with a retinol concentrate for overnight renewal. Formulated with hyaluronic acid, amino acids and botanical extracts, the pair aims to improve texture, reduce the look of fine lines and replenish moisture without heavy residue. Use the daytime serum in the morning and introduce the retinol at night, building frequency as your skin tolerates.

How should I layer these serums into my morning routine?

Apply the Vitamin C serum after cleansing and before moisturizer and sunscreen to maximize brightening and hydration benefits. Use a few drops to cover face, neck and décolleté, allow it to absorb fully, then follow with your usual moisturizer and SPF for daytime protection.

• Cleanse and pat skin dry before application
• Apply 3–5 drops of Vitamin C serum to face and neck
• Wait until serum is fully absorbed, then moisturize and apply SPF
• Use once daily in the morning, increase if tolerated

When and how should I introduce the retinol serum safely?

Start the retinol serum in the evening, using it gradually—every other night or a few times weekly—until your skin builds tolerance, then consider nightly use. Apply a thin layer to clean, dry skin and always follow with a nourishing moisturizer to minimize potential dryness or sensitivity.

• Begin with once or twice weekly use, then increase slowly
• Apply a thin, even layer after cleansing and drying the skin
• Pair with a gentle moisturizer to reduce irritation
• Avoid combining with other strong actives until tolerance is known

What skin concerns does this duo target and what results are realistic?

The formulas target dullness, dehydration, uneven texture and early signs of aging by supporting collagen pathways and providing humectant hydration. Expect improved surface brightness, smoother-feeling skin and reduced appearance of fine lines when used consistently, though results depend on individual skin and routine consistency.

• Vitamin C helps even skin tone and add radiance
• Retinol supports cell turnover and texture refinement
• Hyaluronic acid promotes immediate hydration and plumpness
• Amino acids and botanical extracts aid overall skin nourishment

Are there precautions or storage tips I should follow?

These are topical cosmetic serums—avoid contact with eyes and do not ingest. If you use prescription topical treatments, check with your clinician before combining; discontinue use if irritation occurs. Store both bottles in a cool, dry place away from direct sunlight and keep out of children's reach.

• For external use only; avoid eye and mouth contact
• Consult a doctor if using prescription skin medications
• Store away from heat and sunlight to preserve potency
• Keep out of reach of children

Who is this for: ELBBUB's Day-Night Vitamin C + Retinol Serum set is formulated for adults seeking a concise, two-step regimen to address dullness, early aging signs and dehydration. It suits all skin types when introduced gradually—particularly those who want antioxidant daytime protection plus a targeted overnight retinol treatment. If you have highly reactive skin, consult a dermatologist before use and introduce the retinol slowly.