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O Cosmedics

O Cosmedics B3 Plus 30ml

O Cosmedics B3 Plus 30ml

Regular price $136.00 AUD
Regular price Sale price $136.00 AUD
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O Cosmedics B3 Plus is a high-performance Niacinamide serum designed to address uneven skin tone, hyperpigmentation, redness, breakouts and visible signs of ageing while strengthening the skin barrier. At its core is 12% Niacinamide, helping regulate excess oil, improve moisture retention and calm visible redness for clearer, more balanced and resilient-looking skin.

The multi-corrective formula pairs Niacinamide with 5% Sodium Ascorbyl Phosphate Vitamin C and B-White peptide technology to target dullness, dark spots and uneven pigmentation. Trylagen® provides complementary collagen support, helping improve firmness, elasticity and the appearance of fine lines while antioxidant activity helps defend against environmental oxidative stress. 

Its water-light texture absorbs quickly and layers easily with other corrective skincare, making B3 Plus suitable for both morning and evening use. The streamlined formula provides broad corrective support without adding unnecessary weight or complexity to the routine.

Product Size: 30ml

SKIN DEEP MEDISPA EXPERT VERDICT
Our rating: 4.9/5
O Cosmedics B3 Plus is one I recommend across a surprisingly broad range of skin concerns, but I particularly like it when pigmentation or post-breakout marks are occurring alongside redness, oiliness or a barrier that needs strengthening. I find the 12% Niacinamide particularly useful when oil balance, barrier strength and uneven tone all need attention, while the Vitamin C and targeted peptides extend the formula into pigmentation and collagen support. I also find it useful when someone wants meaningful correction but doesn't need a routine built around several highly targeted serums. It layers easily, works morning or evening and gives me plenty of flexibility to build the rest of the routine around whatever concern needs more specific attention.

BEST FOR
Uneven Skin Tone • Redness • Excess Oil • Enlarged Pores • Ageing

I wouldn't automatically choose B3 Plus when one concern clearly requires a more specialised treatment. Significant dehydration, persistent congestion or more advanced age-management concerns may warrant a different primary corrective. I see B3 Plus as particularly valuable when the skin needs better balance and resilience alongside visible correction.

Reviewed by: Diana / Founder & Head of Clinical Therapies, Skin Deep Medispa, Armadale

🔥 OUR HOT TIP
If you're using B3 Plus for pigmentation or post-breakout marks, take progress photos rather than judging your skin day to day. I recommend using the same lighting every few weeks. Pigment correction is gradual, and consistent photos make changes in tone and clarity much easier to assess than checking the mirror every morning.

Not sure if it’s right for your skin? Ask A Skin Deep Medispa Therapist

What We Love

✓ 12% Niacinamide targets uneven tone, redness, excess oil, enlarged pores and barrier weakness.
✓ 5% Vitamin C brightens dull skin while providing antioxidant and collagen support.
✓ B-White peptide targets hyperpigmentation, helping reduce the appearance of dark spots and uneven tone.
✓ Trylagen® supports collagen and elasticity for firmer, smoother-looking skin.
✓ Water-light and easy to layer, making high-strength Niacinamide simple to incorporate into morning or evening routines.

Key Ingredients

✓ Niacinamide (Vitamin B3) 12% – Helps regulate excess oil, strengthen the skin barrier, improve moisture retention, brighten uneven tone and calm visible redness.
✓ Vitamin C (Sodium Ascorbyl Phosphate) 5% – Stable antioxidant Vitamin C that supports brighter, clearer-looking skin while helping improve collagen, firmness and elasticity.
✓ B-White – Biomimetic brightening peptide that targets the pigmentation process to help reduce dark spots and uneven tone.
✓ Trylagen® – Biomimetic tripeptide complex that supports collagen while helping protect against collagen breakdown for firmer, smoother and more elastic-looking skin.

Ingredients: Aqua, Niacinamide, Sodium Ascorbyl Phosphate, Caprylyl Glycol, Phenoxyethanol, Xanthan Gum, Butylene Glycol, Hydrolyzed Soy Protein, Hydrolyzed Wheat Protein, Disodium EDTA, Lecithin, Pseudoalteromonas Ferment Extract, Sodium Oleate, Oligopeptide-68, Triethanolamine, Carbomer, Tripeptide-1, Tripeptide-10 Citrulline.

Free from parabens, sulfates, petrochemicals and mineral oils, with no artificial colours, harsh preservatives or harsh synthetic fragrances. Vegan-friendly, gluten-free and cruelty-free. The formula is emulsifier-free and biomimetic.

How To Use

Apply morning and/or evening to freshly cleansed skin. Dispense 1 pump of O Cosmedics B3 Plus onto fingertips and apply evenly over the face and neck.

Follow with any additional O Cosmedics serums and your preferred O Cosmedics moisturiser.

In the morning, always finish with O Cosmedics Mineral Pro for daily UV protection.

FAQs

Is O Cosmedics B3 Plus suitable for sensitive or redness-prone skin?
Yes, it can be. Niacinamide supports barrier function and helps calm visible redness. However,O Cosmedics B3 Plus contains 12% Niacinamide, so we wouldn't assume every highly reactive skin will respond identically. If your barrier is significantly compromised or your skin reacts easily, we recommend introducing it according to your current skin condition rather than simply assuming more Niacinamide is better.

Can O Cosmedics B3 Plus help with post-breakout marks as well as active breakouts?
Yes. This is one reason we particularly like O Cosmedics B3 Plus for breakout-prone skin. Niacinamide helps regulate oil and calm visible inflammation, while Vitamin C and B-White provide complementary support for the uneven pigmentation that can remain after a breakout has settled. If active congestion is persistent, however, we may pair it with a more targeted corrective rather than expecting B3 Plus to do everything itself.

Can O Cosmedics B3 Plus help minimise enlarged pores?
O Cosmedics B3 Plus can help improve their appearance, particularly where excess oil is contributing to visible pores. Niacinamide helps regulate sebum and improve overall skin balance, which can make pores appear less prominent. We wouldn't describe any skincare product as physically shrinking pores, so persistent congestion or texture may require additional targeted treatment.

Can I use O Cosmedics B3 Plus with Vitamin A?
Yes. O Cosmedics B3 Plus can complement a Vitamin A routine particularly well because Niacinamide provides barrier and oil-balancing support while Vitamin C and peptides address antioxidant, pigmentation and firmness concerns. We use the combination where it makes sense for the skin rather than assuming every corrective serum needs to be layered together.

Do I need another Vitamin C serum if I use O Cosmedics B3 Plus?
Not necessarily. O Cosmedics B3 Plus already contains 5% Sodium Ascorbyl Phosphate, a stable Vitamin C derivative. If you're primarily looking for multi-corrective support for pigmentation, redness, breakouts and barrier health, that may be sufficient within your routine. A separate Vitamin C product may make sense where antioxidant or Vitamin C-specific correction is a higher priority, but we wouldn't add one simply for duplication.

Can I use O Cosmedics B3 Plus morning and night?
Yes. We generally base frequency on the role O Cosmedics B3 Plus is playing in your routine. If it's one of your main corrective serums, twice daily may make sense; if you're using several active products, once daily may be sufficient within the overall routine.

Can I use O Cosmedics B3 Plus during pregnancy or breastfeeding?
O Cosmedics states that B3 Plus has no known pregnancy or breastfeeding contraindications. We would still recommend checking with your healthcare provider if you have any concerns about skincare use during pregnancy or breastfeeding.

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★★★★★

“I bought this mainly for pigmentation left behind after breakouts, but I've noticed my skin is generally much calmer as well. My tone looks more even and I don't get as oily through the afternoon. It has become one of those products I use every day without really thinking about it.”

Sophie, Kilsyth VIC

★★★★★

“I have quite reactive skin and was nervous about the 12% B3, so I started using it once a day. It's been great for me. The redness around my cheeks has settled and my skin feels much less temperamental overall. The texture is also lovely under moisturiser and makeup.”

Evelyn, Newcastle NSW

★★★★★

“I've been using this morning and night for about two months, mainly for some sun spots and uneven tone across my cheeks. My skin definitely looks brighter and more even now, and I really like how light the serum feels. It disappears into my skin straight away and sits well under everything else I use.”

Kate, Perth WA