Vitamin C & Hyaluronic Acid Serum – SENSE OF BRIGHTNESS 30ml
A morning water-based serum that combines stable Vitamin C with hyaluronic acid to inhibit tyrosinase, neutralise UV-induced free radicals and hydrate the skin without oils, formulated specifically to be photo-safe under daily SPF on melanin-rich skin.
Why You'll Love It
- Brightens the complexion and supports a more even tone, without drying or sensitising the skin.
- Protects the skin daily from UV-induced oxidative stress, the primary trigger of new pigmentation on melanin-rich skin.
- Lightweight, fast-absorbing texture that layers cleanly under moisturiser and SPF, with no pilling and no sticky finish.
What is SENSEOFBRIGHTNESS?
SENSEOFBRIGHTNESS is a 30ml water-based morning serum formulated with five ingredients only: Vitamin C, hyaluronic acid, vegetable glycerin, water and a stabilising preservative. The minimalist formulation is intentional. On melanin-rich skin, every additional active is a potential trigger of inflammation and post-inflammatory hyperpigmentation. By limiting the formula to actives with documented synergy and a stable pH, we deliver brightening results without the irritation risk that complex Vitamin C serums often introduce.
How it works
Vitamin C inhibits tyrosinase, the enzyme responsible for melanin overproduction in inflamed or sun-exposed areas. It also functions as a powerful antioxidant, neutralising the free radicals generated by UV exposure that accelerate melanin synthesis. Hyaluronic acid and vegetable glycerin act as humectants, drawing moisture into the upper layers of the skin and counteracting the drying effect that ascorbic acid can produce. The water base maintains the low pH (between 2.5 and 3.5) that ascorbic acid requires to remain stable and bioavailable.
Used every morning after cleansing, SENSEOFBRIGHTNESS delivers a continuous tyrosinase-inhibiting and antioxidant action throughout the day, while a daily SPF protects the skin from new pigmentation triggers. For an in-depth explanation of how Vitamin C works on melanin-rich skin, see our reference guide.
- Hyaluronic acid
- Vitamin C
- Vegetable glycerin
- Aqua
- Phenoxyethanol
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We’re here to help you learn more about the product, determine if it suits your needs, and guide you on how to use it effectively.
Frequently Asked Questions
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SENSEOFBRIGHTNESS is a morning-only serum. Always pair with a daily SPF of 30 or higher.
Morning routine:
1. Cleanse your face with a gentle cleanser.
2. Pat the skin until slightly damp, not wet. Damp skin temporarily increases absorption.
3. Dispense 3 to 4 drops into your palm.
4. Press gently across the face using your fingertips. Do not rub. Hold for 20 to 30 seconds on areas with dark spots, allowing the formula to absorb fully.
5. Wait 60 seconds before applying your moisturiser on top.
6. Finish with SPF 30 or higher. Vitamin C and SPF work synergistically: SPF protects the skin from UV damage, Vitamin C neutralises any UV-induced free radicals that pass through.
Frequency: every morning, consistently. Skipping 3 days in a row extends your visible improvement timeline by 2 to 3 weeks because tyrosinase inhibition depends on sustained presence of the active.
Storage: in a cool, dark place. Keep the cap sealed immediately after use. If the serum changes from clear or pale yellow to amber or brown, the Vitamin C has oxidised and is no longer effective. Replace the bottle. -
SENSEOFBRIGHTNESS is formulated for adults with melanin-rich skin (Fitzpatrick types III to VI) who are dealing with one or several of the following:
- Recurring post-inflammatory hyperpigmentation from acne, ingrown hairs or skin trauma.
- Uneven skin tone, dullness or lack of radiance, particularly in winter or after sun exposure.
- A desire to prevent new dark spots while existing pigmentation is being treated with stronger night actives.
- Sensitivity or reactivity to multi-active Vitamin C serums (those containing niacinamide, ferulic acid, Kojic acid).
Who should be cautious: people with a documented allergy to any of the five ingredients, people on photosensitising medication that requires strict UV avoidance, people with active eczema or open wounds on the face. Always perform a 24-hour patch test on the inner forearm before first facial application. -
- Weeks 1 to 2: skin feels softer and more hydrated. No visible change on dark spots. This is normal. The Vitamin C is accumulating in the skin and beginning to inhibit tyrosinase activity at the cellular level.
- Weeks 3 to 4: complexion appears more even in radiance. A subtle glow becomes noticeable. Existing dark spots remain unchanged.
- Weeks 6 to 8: lighter surface pigmentation begins to fade. Recent post-inflammatory marks soften at the edges.
- Months 3 to 6: significant fading of post-inflammatory hyperpigmentation. Skin tone visibly more uniform overall.
Important: results depend on three variables: daily consistency, the use of SPF every morning without exception, and the management of underlying triggers (acne, friction, sun exposure). Without daily SPF, even moderate UV exposure stimulates tyrosinase activity, directly counteracting the inhibitory effect of the serum.
- Weeks 1 to 2: skin feels softer and more hydrated. No visible change on dark spots. This is normal. The Vitamin C is accumulating in the skin and beginning to inhibit tyrosinase activity at the cellular level.
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If you experience any irritation or allergic reaction,discontinue use immediately.It is always recommended to perform a patch test before using any new hair or skin care product, especially if you have a history of sensitivity or allergy.In case of accidental contact with eyes, rinse thoroughly with water. Keep out of reach of children.
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What Each Ingredient Does
- Vitamin C (L-ascorbic acid): the primary active. Inhibits tyrosinase, neutralises UV-induced free radicals and supports collagen synthesis. Stable in this formulation thanks to the controlled low pH and the absence of competing actives that accelerate oxidation.
- Hyaluronic acid: humectant that attracts and binds water in the upper layers of the skin. Counteracts the drying effect ascorbic acid can produce, particularly on skin already dealing with post-inflammatory sensitivity.
- Vegetable glycerin: a second humectant that prevents transepidermal water loss and improves the comfort of the formula. Also contributes to the smooth, non-sticky texture.
- Aqua: the water base maintains the low pH (between 2.5 and 3.5) that L-ascorbic acid requires to stay stable and penetrate the skin. Not a filler, a functional requirement.
- Phenoxyethanol: cosmetic preservative used to prevent microbial contamination throughout the product's shelf life. Considered safe at standard cosmetic usage levels by regulatory bodies including the European Commission.
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- Apply Only in the Morning: For optimal benefits, use the SENSEOFBRIGHTNESS Vitamin C Serum exclusively in the morning. Vitamin C works best during the day by protecting your skin from environmental damage and boosting its natural radiance.
- Always Start with Clean, Dry Skin: To maximize the serum’s effectiveness, make sure your skin is thoroughly cleansed and dry before application. This allows the active ingredients to penetrate deeper and deliver better results.
- Avoid Mixing with Retinol: Never use Vitamin C and Retinol together in the same routine. Vitamin C is best used in the morning, while Retinol should be reserved for your nighttime routine. Mixing them can reduce their effectiveness and may cause irritation.
- Be Patient and Consistent: Hyperpigmentation and uneven skin tone can take time to improve. Stick to your routine and apply the serum daily to gradually see noticeable changes in your skin’s appearance.
- Store in a Cool, Dry Place: To preserve the serum’s potency, store it in a cool, dry area away from direct sunlight and heat. This will help maintain its effectiveness over time.
- Combine with Other Products: For even better results, pair this serum with other products like the SENSEOFBRIGHTNESS Soap for a comprehensive brightening routine that enhances your skin’s glow.
- Patch Test Before Use: As with any skincare product, it’s essential to patch test before using. If you experience any irritation or allergic reactions, discontinue use immediately.
By following these tips, you’ll ensure that your skin gets the most out of our Vitamin C serum, leaving you with a brighter, more even complexion.
- Apply Only in the Morning: For optimal benefits, use the SENSEOFBRIGHTNESS Vitamin C Serum exclusively in the morning. Vitamin C works best during the day by protecting your skin from environmental damage and boosting its natural radiance.
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Why is the formula only five ingredients?
Most Vitamin C serums on the market contain 15 to 30 ingredients including niacinamide, ferulic acid, Kojic acid and various extracts. On melanin-rich skin, every additional active increases the risk of inflammation, which directly triggers new post-inflammatory hyperpigmentation. By limiting the formula to five ingredients with documented synergy, we deliver brightening without irritation.
Can I use SENSEOFBRIGHTNESS in the morning under SPF?
Yes, that is exactly how it is designed to be used. Unlike oil-based dark spot serums (such as SENSEOFLUMINE) that contain photosensitising actives, SENSEOFBRIGHTNESS is water-based and free of photosensitisers, making it fully compatible with daytime use and mandatory under SPF for best results.
Can I combine SENSEOFBRIGHTNESS with the SENSEOFLUMINE night serum?
Yes, the two products form a 24-hour tyrosinase-inhibiting protocol. Apply SENSEOFBRIGHTNESS in the morning under SPF. Apply SENSEOFLUMINE at night. Both inhibit tyrosinase through complementary pathways, reinforcing each other without overlap or irritation risk.
Will my Vitamin C serum lighten my skin?
No. SENSEOFBRIGHTNESS does not bleach or alter your natural skin tone. Vitamin C inhibits tyrosinase, the enzyme that overproduces melanin in inflamed or sun-damaged areas. Your dark spots fade back to your natural baseline complexion. Your overall skin tone remains exactly what it is.
Why has my serum changed colour?
Vitamin C oxidises in contact with air, light and heat. If your serum has turned from clear or pale yellow to orange, amber or brown, the L-ascorbic acid has oxidised and is no longer biologically active. Applying an oxidised serum can actually worsen pigmentation by triggering additional oxidative stress. Store your bottle in a cool, dark place, seal it immediately after use, and replace it if the colour shifts.
Can I use Vitamin C every day on melanin-rich skin?
Yes, daily morning use is precisely what produces results. Tyrosinase inhibition depends on sustained presence of the active in the skin. Using Vitamin C twice a week or skipping days regularly will not deliver the visible improvement that consistent daily use provides.
Can I combine Vitamin C with retinol or other actives?
Use SENSEOFBRIGHTNESS in the morning, retinol products (such as SENSEOFREVIVE) at night. Combining strong actives in the same routine on melanin-rich skin increases irritation risk, which is the primary trigger of new post-inflammatory hyperpigmentation. Time-separation is the safer protocol.
How long does one bottle last?
Used at the recommended dose (3 to 4 drops once daily), one 30ml bottle lasts between 6 and 8 weeks. To preserve potency, replace the bottle if Vitamin C oxidation is visible (colour change), regardless of remaining content. -
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Our delivery times for France and the United Kingdom are estimated at 2 to 5 business days. For other international destinations, the timeframe may vary. Generally, expect a delivery time of 5 to a maximum of 15 days, depending on the period and location. We make every effort to ensure fast and efficient delivery, so you can enjoy our products as soon as possible.