Rilastil D-Clar Serum – Niacinamide Depigmenting Serum for Dark Spots & Uneven Tone (30ml)

A concentrated depigmenting serum that targets dark spots, melasma and uneven tone with niacinamide, Vitamin C and brightening actives — designed to visibly even out skin over time.

Best for: persistent pigmentation, sun-induced dark spots, and dull, uneven skin tone; suitable as a targeted AM or PM treatment step.

How to use: apply a few drops to clean skin, once or twice daily as tolerated. In the morning, always follow with a broad-spectrum SPF 50. Introduce gradually if your skin is sensitive.

Texture: lightweight serum that absorbs quickly and layers under moisturiser.

Key ingredients: niacinamide, Vitamin C, depigmenting complex.

Size: 30ml.

Pigmentation is one of the hardest concerns to treat consistently — a serum works best inside a full routine with daily sun protection. Book a ₹299 online dermatologist video consult at Skn Biome to build yours.

• Vitamin C (Ascorbyl Glucoside) – Brightens & protects against free radicals
• Niacinamide – Improves skin barrier, reduces pigmentation
• Licorice Extract – Soothes & lightens dark spots
• Hyaluronic Acid – Hydrates & plumps the skin
• Antioxidant Complex – Protects against oxidative stress

FAQs

Q1. Rilastil D-Clar uses Ascorbyl Glucoside as its Vitamin C form — why not regular L-ascorbic acid?
A1. L-ascorbic acid (pure Vitamin C) is the most biologically active form but is inherently unstable — it oxidises rapidly on exposure to air and light, turning orange-brown and losing efficacy within weeks of opening. Ascorbyl Glucoside is a glycosylated derivative where a glucose molecule is bonded to Vitamin C, protecting the active site from oxidation. It is enzymatically cleaved to free ascorbic acid by skin glucosidases after penetrating the epidermis. The trade-off is slightly slower action compared to well-formulated L-ascorbic acid, but significantly longer shelf stability in the bottle. For a serum designed for daily long-term use (brightening and antioxidant protection), the stability of Ascorbyl Glucoside makes it a more practical choice in D-Clar's formulation.

Q2. How do Niacinamide and Vitamin C in Rilastil D-Clar work together for pigmentation?
A2. They address different steps in the pigmentation pathway, making them complementary rather than redundant. Ascorbyl Glucoside (converting to Vitamin C) inhibits tyrosinase and reduces the oxidation of DOPA to dopaquinone — blocking melanin synthesis. Niacinamide does not inhibit melanin production; instead, it blocks the transfer of melanosomes from melanocytes to keratinocytes — the final step before pigment appears visibly in the skin. Inhibiting the upstream step (Vitamin C) AND the downstream transfer step (Niacinamide) provides a more complete interruption of the pigmentation process than either ingredient can achieve independently.

Q3. What type of dark spots responds best to Rilastil D-Clar Serum — melasma, PIH, or sun spots?
A3. All three types respond, but at different rates and depths. Epidermal sun spots (solar lentigines) sit close to the skin surface and respond fastest — measurable lightening in 6–8 weeks. PIH (post-inflammatory hyperpigmentation from acne or injury) is epidermal-dominant and responds similarly, though consistency is critical. Melasma is the most challenging because it can have both epidermal and dermal components; the epidermal layer responds to D-Clar within 8–12 weeks, while dermal melasma requires longer treatment and responds more slowly even to professional treatments. All three require unwavering daily SPF use alongside the serum — without it, new pigmentation forms faster than the serum can clear existing marks.

Q4. When should Rilastil D-Clar Serum be used — morning, night, or both?
A4. D-Clar Serum is formulated for evening use as the primary application, when the skin is in repair mode and melanocyte activity can be addressed without concurrent UV competition. If using retinol at night, apply D-Clar on alternate evenings to avoid layering multiple active serums and oversaturating skin capacity. A morning application of Ascorbyl Glucoside is also beneficial — as a Vitamin C antioxidant, it builds an antioxidant shield against UV-induced free radical damage before sun exposure. If using twice daily, apply Rilastil Water Touch SPF 50 over D-Clar in the morning as the final step.

Q5. Can Rilastil D-Clar be used on PIH from acne while acne is still active — will it interfere with acne treatment?
A5. Niacinamide in D-Clar Serum is beneficial in active acne-prone skin — it reduces sebum production, strengthens the skin barrier, and has anti-inflammatory properties. It will not worsen or interfere with topical acne treatments like adapalene, benzoyl peroxide, or azelaic acid. The one caveat is that if your acne treatment includes L-ascorbic acid or other acids (AHA/BHA), check with your dermatologist before layering D-Clar in the same routine to avoid overloading the skin. Starting D-Clar while acne is still active is appropriate to begin addressing existing PIH, but the most effective pigmentation clearing happens once breakouts are controlled and no new PIH is forming.

Country of Origin: Spain
Mfg/Marketer details: Dermofarm S.A.U, Leonardo da Vinci, 16-22, 08191 Rubí, Barcelona, Spain
Importer details: M/S Luxe Skin Care, C-134, Front Office, Second Floor, Okhla, New Delhi - 110020, India
Shelf Life: 36 months from manufacturing date
Storage: Store in a cool, dry place away from direct sunlight
Safety Information: For external use only. Avoid contact with eyes. If irritation occurs, discontinue use. Always use sunscreen during the day while using brightening products.