✨ numbuzin No.5+ Glutathione Vitamin Concentrated Serum 30ml | Your Dark Spots Have Been Put on Notice
Dark spots overstaying their welcome? Post-blemish marks hanging around like they signed a lease? Dull, uneven-looking skin stealing your glow?
numbuzin No.5+ Glutathione Vitamin Concentrated Serum is a concentrated brightening serum created to tackle the appearance of dark spots, hyperpigmentation, post-blemish marks, dullness and uneven-looking skin tone.
The formula brings together a seriously impressive brightening lineup featuring Glutathione, Niacinamide, Tranexamic Acid, Vitamin C and Alpha-Arbutin, then backs them up with soothing, hydrating and skin-conditioning ingredients including Panthenol, Ceramide NP, Beta-Glucan, Allantoin and Sodium Hyaluronate.
Basically, numbuzin looked at uneven tone and said, “Okay, we’re going to need the whole team for this one.” 😏💜
🌟 Meet the Brightening Dream Team
This isn’t a one-star show. No.5+ takes a multi-ingredient approach to brighter, more even-looking skin.
✨ Glutathione
A powerful antioxidant at the heart of the No.5+ formula, included as part of its targeted approach to dullness, dark spots and uneven-looking tone.
🎯 Tranexamic Acid
A tone-focused ingredient incorporated into the serum to help improve the appearance of dark spots, post-blemish marks and visible discoloration.
💛 Niacinamide
The skincare overachiever we all know and love. It supports the formula’s brightening focus while helping promote a smoother, more even-looking complexion.
🍊 Vitamin C
The formula includes multiple vitamin C ingredients, including 3-O-Ethyl Ascorbic Acid, Ascorbic Acid and Ascorbyl Glucoside, adding antioxidant and radiance-focused care.
🤍 Alpha-Arbutin
Another recognizable brightening ingredient joins the mix to complement the serum’s overall tone-evening approach.
One serum. Multiple routes to glow. We like those odds. ✨
🧪 More Than a Vitamin C Serum
The name says Vitamin Concentrated Serum, but reducing this formula to “just another vitamin C serum” would be selling it seriously short.
Instead, numbuzin combines several complementary ingredients in one concentrated treatment:
✨ Glutathione
🎯 Tranexamic Acid
💛 Niacinamide
🍊 3-O-Ethyl Ascorbic Acid
🍊 Ascorbic Acid
🍊 Ascorbyl Glucoside
🤍 Alpha-Arbutin
🛡️ Tocopherol + Tocopheryl Acetate
⚡ Thioctic Acid
✨ Ubiquinone
Translation?
This bottle came prepared.
💦 Brightening Is Great. Comfortable Skin Is Better.
All those exciting tone-focused ingredients are only part of the story. No.5+ also includes a supporting cast aimed at keeping skin hydrated and conditioned.
💦 Panthenol
Provides moisturizing and soothing support alongside the more active-focused ingredients.
🧱 Ceramide NP
Adds skin-conditioning and moisture-barrier support to the formula.
💧 Sodium Hyaluronate
A familiar humectant that helps attract moisture to the skin.
🌿 Beta-Glucan
Provides additional moisturizing and skin-conditioning support.
🤍 Allantoin
Helps soothe and condition the skin.
🌼 Bisabolol
Another soothing ingredient tucked into this impressively crowded little bottle.
Because we’re chasing glow here.
Not chaos. 😏
🎯 What It’s Made to Target
No.5+ is especially tempting when your biggest skincare complaints happen to involve tone and radiance.
✨ Dark spots
✨ Hyperpigmentation
✨ Post-blemish marks
✨ Uneven-looking skin tone
✨ Dull or tired-looking skin
✨ Lack of radiance
✨ Skin that needs brightening plus hydration
If you’ve been staring at the same stubborn little mark every morning asking,
“Are you seriously still here?”… welcome to the No.5+ fan club. 😂
🛡️ The Antioxidant Supporting Cast
This formula isn’t exactly shy about antioxidants either.
Glutathione + Vitamin C + Vitamin E + Ubiquinone + Thioctic Acid create an antioxidant-heavy supporting lineup within the formula.
Then numbuzin adds botanical ingredients including
Turmeric Root Extract, Tremella Mushroom Extract and Sugarcane Extract to make the ingredient list even more interesting.
Honestly, the guest list for this 30ml bottle is getting ridiculous. And we mean that as a compliment. 💜
💫 Texture & Finish
This is a concentrated serum designed to fit comfortably into a daily skincare routine while delivering both brightening and hydrating care.
Use it across the complexion for overall tone care or give areas of visible discoloration a little extra attention.
And unlike the separate No.5+ Advanced Dark Ampoule Concentrate, there’s no mixing or activation step here. Just dispense and apply.
🧴 How To Use
Use after cleansing and toning.
Step 1: Apply an appropriate amount of serum across the face.
Step 2: Gently pat into the skin until absorbed.
Step 3: Apply a little extra serum to areas of concern if desired.
Step 4: Follow with the rest of your skincare routine.
☀️ Xq Tip: If evening out the appearance of dark spots is the goal, don’t let sunscreen be the lazy coworker in your routine. Finish your morning skincare with broad-spectrum SPF. 😏
🩷 Who Is It For?
numbuzin recommends the serum across oily, dry, combination, acne-prone and sensitive skin types, particularly when discoloration and dullness are primary concerns.
✔️ Dark spots
✔️ Post-blemish marks
✔️ Hyperpigmentation
✔️ Uneven-looking tone
✔️ Dull complexion
✔️ Skin lacking radiance
✔️ Anyone wanting antioxidant + brightening care in one serum
⚠️ Good To Know
When introducing any new concentrated skincare treatment, patch testing is always a smart move, particularly if your skin tends to be sensitive or reactive.
For external use only.
Avoid direct contact with the eyes.
Do not apply to broken or irritated skin.
Discontinue use if persistent irritation develops.
Protect the product from excessive heat and direct sunlight.
Always refer to the ingredient list printed on your individual product packaging for the most current formulation information.
💜 Why Xq Loves It
💜 Glutathione
💜 Tranexamic Acid
💜 Niacinamide
💜 Multiple forms of Vitamin C
💜 Alpha-Arbutin
💜 Panthenol + Allantoin
💜 Ceramide NP + Beta-Glucan
💜 Vitamin E + Ubiquinone
💜 Brightening + hydrating formula
💜 Targets dark spots and uneven-looking tone
💜 Suitable for multiple skin types
💜 Convenient 30ml size
🔥 The Xq Take
Some brightening serums pick one superstar ingredient and hope for the best.
numbuzin No.5+ apparently decided that sounded boring. 😏
Instead, you get Glutathione + Tranexamic Acid + Niacinamide + multiple forms of Vitamin C + Alpha-Arbutin, backed by Panthenol, Ceramide NP, Beta-Glucan, Allantoin, Vitamin E and more.
It’s a mighty attractive lineup for anyone whose skincare wish list includes fewer visible dark spots, more even-looking tone and a serious return of the glow.
Brighten. Hydrate. Target the spots. Bring back the glow. Then politely inform lingering discoloration that nobody renewed its lease. 💜

