Numbuzin No.5+ Glutathione Vitamin Concentrated Serum 30ml

Additional Information

Key Benefits

Helps Improve the Appearance of Dark Spots

The formula contains 4% tranexamic acid, 5% niacinamide, glutathione and alpha-arbutin to support a clearer and more even-looking complexion with consistent use.

Targets Post-Acne Marks

It is suitable for flat brown, grey or reddish marks that remain after a blemish has healed. These marks are different from permanent indented or raised acne scars, which generally require professional treatment.

Brightens Dull-Looking Skin

Multiple antioxidant and vitamin ingredients help improve the appearance of tired, lacklustre skin and promote a more radiant-looking finish.

Supports a More Even-Looking Skin Tone

Niacinamide has been studied for its ability to reduce the visible appearance of hyperpigmented spots by affecting the transfer of pigment-containing melanosomes within the skin.

Provides Hydration and Barrier Support

Panthenol, sodium hyaluronate, beta-glucan, allantoin and ceramide NP help maintain hydration and support the skin’s moisture barrier. Research on topical panthenol and ceramide-containing formulations supports their roles in hydration and barrier care.

Suitable for a Daily Routine

The lightweight texture is designed for use in both morning and evening routines and can be applied across the face or concentrated on areas of uneven-looking tone.

Brand-Reported Clinical Results

According to numbuzin, clinical testing showed the following results after four weeks of product use:

18.90% improvement in the appearance of overall skin-tone evenness
9.65% reduction in the appearance of dark spots

The brand also reports that hypoallergenic and skin-irritation testing was completed. These are manufacturer-reported results; individual results may differ depending on the type and cause of pigmentation, consistency of use and daily sun protection.

Key Ingredients & Benefits

5% Niacinamide

Niacinamide is a form of vitamin B3 that helps improve the appearance of uneven skin tone, supports the skin barrier and contributes to a smoother, more radiant-looking complexion.

4% Tranexamic Acid

Tranexamic acid is used in topical tone-care formulations to improve the visible appearance of discoloration and uneven pigmentation. Its inclusion makes this serum especially relevant for post-acne marks and persistent uneven-looking tone.

Glutathione

Glutathione is an antioxidant included to support brighter and more even-looking skin. It works alongside the formula’s vitamin C ingredients, niacinamide and tranexamic acid rather than acting as the serum’s only brightening ingredient.

Vitamin C Complex

The current official ingredient list contains three forms of vitamin C:

3-O-Ethyl Ascorbic Acid
Ascorbic Acid
Ascorbyl Glucoside

These ingredients provide antioxidant support and contribute to the formula’s overall brightening function.

Alpha-Arbutin

Alpha-arbutin is a tone-care ingredient commonly used to improve the visible appearance of dark spots and uneven pigmentation. Laboratory research indicates that arbutin can influence tyrosinase activity, an enzyme involved in pigment production.

Panthenol

Panthenol helps retain moisture, reduce dryness and maintain skin comfort. It is especially valuable in a formula that combines several active tone-care ingredients.

Ceramide NP

Ceramide NP supports the skin’s natural moisture barrier and helps reduce moisture loss.

Sodium Hyaluronate and Beta-Glucan

These humectant and conditioning ingredients help attract and retain moisture, keeping the skin hydrated and comfortable.

Bisabolol, Allantoin and Dipotassium Glycyrrhizate

These supporting ingredients are included to help soothe the skin and balance the concentrated brightening formula.

How to Use

1. Cleanse the face and apply toner or essence, when used.
2. Dispense a small amount of serum and spread it evenly over the face.
3. Apply an additional thin layer to areas with visible dark spots or post-acne marks, when needed.
4. Gently pat until absorbed.
5. Follow with moisturizer.
6. During the daytime, finish with a broad-spectrum sunscreen.

The manufacturer recommends applying an appropriate amount and gently patting the product into the skin. It can be used in both morning and evening routines.

How Often Should It Be Used?

Experienced users may apply it once or twice daily. Sensitive-skin beginners can begin three or four evenings per week and gradually increase the frequency if the skin remains comfortable.

Consistency is important for tone-care products. However, increasing the amount or frequency beyond what the skin tolerates will not necessarily produce faster results.

Major Ingredients

Skin Type & Concern

Recommended For

This serum may be a good choice for users concerned about:

Flat, discoloured marks left after blemishes
Uneven-looking skin tone
Sun-related dark spots
Dull or tired-looking skin
A lack of visible radiance
Dehydrated skin that still needs active tone care
Brightening routines that avoid strong exfoliating acids

The brand recommends it for normal, dry, oily, combination, sensitive and acne-prone skin types.

Who May Not Prefer This Serum

This may not be the ideal choice for:

Users with a known sensitivity to niacinamide, vitamin C derivatives, tranexamic acid or alpha-arbutin
People who prefer a very minimal formula with only one active ingredient
Users expecting permanent indented or raised acne scars to disappear
People looking for an active-acne treatment rather than a post-acne-mark serum
Users who dislike any degree of tackiness in layered skincare

Sensitive-skin beginners should introduce the serum gradually rather than beginning with twice-daily application.

Texture, Finish and Bangladesh Climate Note

The brand describes the serum as lightweight, fluid and fast absorbing. It layers comfortably between toner and moisturizer and can be worn under sunscreen.

For Bangladesh’s warm and humid climate, begin with a thin layer and allow it to absorb before applying moisturizer or sunscreen. Using more product than necessary may create a slightly tacky finish, particularly when combined with several hydrating layers.

Oily and combination skin may prefer pairing it with a lightweight gel moisturizer. Dry or dehydrated skin can follow it with a richer moisturizer to prevent tightness.

Disclaimer

Product packaging, label design and ingredient information may be updated by the manufacturer without prior notice. As a result, the product received may differ slightly from older website images while remaining authentic.

Always inspect the product at the time of delivery and check the physical packaging for the latest ingredient list, batch information and expiry date. Customers with known allergies should rely on the ingredient list printed on the received product before use.