No.5 Vitamin Concentrated Serum
Quick take: lightweight vitamin serum with niacinamide, vitamin complex, and humectants to brighten the look of dullness, refine tone appearance, and hydrate with a non-sticky finish.
Last updated: 2024-05-20 • Changelog: Added FAQ, usage order, safety notes.
What it is
A brightening serum that blends niacinamide with a vitamin-rich complex and hydrating agents to support a more luminous, even-looking complexion while maintaining lightweight moisture.
Who it's for
- Dull or uneven-looking skin seeking radiance and tone refinement.
- Normal, combination, or oily skin types preferring a fast-absorbing serum.
- Routines that layer hydration under sunscreen and makeup without heaviness.
Key ingredients (INCI)
- Niacinamide — cosmetic brightening, tone-evening, and barrier support.
- Vitamin complex (e.g., vitamin C derivatives, panthenol) — helps improve radiance and comfort.
- Humectants (e.g., glycerin, sodium hyaluronate) — attract and hold moisture.
- Soothing agents (e.g., allantoin/centella derivatives) — buffer potential irritation from actives.
Free-from / texture
- Lightweight, watery-to-dewy serum; absorbs quickly.
- Low oil content and low residue; check INCI for fragrance sensitivities.
- Layers cleanly under moisturizer and sunscreen for day or night use.
How to use & order
- After cleansing and toner, apply 1–2 pumps over face and neck.
- Use morning and/or night; follow with moisturizer and daytime sunscreen.
- Can be paired with hydrating toners/essences for extra moisture before sealing with cream.
Conflicts & layering tips
- Compatible with most routines; if using strong acids or retinoids, alternate days to reduce sensitivity.
- Pair with barrier creams to lock in hydration and minimize potential dryness.
- Patch test if sensitive to niacinamide or vitamin complexes at higher levels.
Evidence & notes
- Radiance and tone-evening effects are cosmetic; consistent use is needed to maintain appearance.
- Niacinamide supports a more even-looking tone and barrier resilience with regular use.
- Humectants draw moisture; sealing with moisturizer reduces transepidermal water loss.
Safety
- For external use only; discontinue if irritation occurs.
- Patch test before first use, especially if you have sensitive or reactive skin.
- Avoid applying on compromised or freshly exfoliated areas; consult a professional if post-procedure.
- Pregnancy/breastfeeding: cosmetic ingredients; defer to your physician for personal guidance.
FAQ
Q. What does this serum target?
A. It is a brightening, radiance-boosting serum combining niacinamide, vitamin complex, and humectants to improve the look of dullness and uneven tone while keeping skin hydrated.
Q. Can I use it with exfoliating acids or retinoids?
A. Yes, but avoid stacking multiple strong actives in one routine. Alternate nights with acids/retinoids and keep supporting steps gentle and hydrating.
Q. Is it suitable for oily or combination skin?
A. The lightweight, fast-absorbing texture makes it suitable for oily, combination, and normal skin types seeking a non-heavy brightening serum.
Licensing
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