Hi Girls Bye Pores 10% Niacinamide + 1% Zinc PCA
Hi Girls Bye Pores 10% Niacinamide + 1% Zinc PCA
Product Description
Product overview
A targeted pore-refining serum with 10% Niacinamide, 1% Zinc PCA, and Alpha-Arbutin to control excess sebum, minimize pore appearance, fade blemishes, and brighten uneven skin tone. Enriched with botanical extracts including propolis, calendula, and aloe vera for calming, anti-inflammatory support.
Sebum Regulation
Zinc PCA at 1% is clinically shown to reduce sebum production after 28 days of use, helping control oily shine throughout the day.
Texture & feel
SENSORYSebum Regulation
Zinc PCA at 1% is clinically shown to reduce sebum production after 28 days of use, helping control oily shine throughout the day.
Pore Minimizing
10% Niacinamide visibly tightens and refines pore appearance by strengthening the skin barrier and normalizing oil output.
Blemish Fading
Alpha-Arbutin works as a gentle brightening agent to fade post-acne marks and dark spots without harsh side effects.
Botanical Soothing
Propolis, calendula, aloe vera, and allantoin calm inflammation, reduce redness, and support the skin’s natural healing process.
Safety & compatibility
SAFEContains Salix Alba (Willow) Bark Extract, which is a natural source of salicylates. While not the same as salicylic acid and present at low concentrations, consult your doctor before use during pregnancy or breastfeeding to be safe.
Contains Polysorbate 20, which can feed Malassezia yeast. Not recommended for fungal acne (pityrosporum folliculitis). Consider The Ordinary Niacinamide 10% + Zinc 1% as a fungal-acne-safe alternative.
Rated 1/5 on the comedogenic scale. No heavy oils, waxes, or pore-clogging ingredients. Very unlikely to cause breakouts from clogged pores.
Safe to layer with retinol in PM routine. Niacinamide can actually help buffer retinol irritation. Apply this serum first, let absorb, then apply retinol.
Can be used with Vitamin C. For best results, use Vitamin C in AM and this Niacinamide serum in PM, or allow 10–15 minutes between application.
Safe to use with chemical exfoliants. Apply AHA/BHA first on clean skin, wait 20 minutes, then follow with this serum to calm and protect.
Ingredient breakdown
INGREDIENTSNiacinamide (Vitamin B3) 10%Proven
A powerhouse multitasking active that strengthens the skin barrier, regulates sebum production, minimizes pore appearance, fades hyperpigmentation, and improves overall skin texture and radiance.
- Barrier repair: Boosts ceramide production to strengthen the skin's natural moisture barrier.
- Oil control: At 5–10%, niacinamide significantly reduces sebum excretion rate within 2–4 weeks.
- Brightening: Inhibits melanosome transfer to reduce dark spots and even out skin tone.
- Anti-aging: Stimulates collagen synthesis and reduces fine lines with consistent use.
Zinc PCA 1%Proven
A synergistic combination of zinc and L-pyrrolidone carboxylic acid (a natural moisturizing factor). Regulates sebum, fights acne-causing bacteria, and provides hydration support.
- Sebum reduction: In-vivo studies show 1% Zinc PCA statistically significantly reduces sebum output after 28 days.
- Antimicrobial: In-vitro tests demonstrate strong antibacterial activity against acne-causing bacteria.
- Collagen support: A 2011 research paper found Zinc PCA may promote Type I collagen production.
Alpha-Arbutin <1%Proven
An optical isomer of naturally occurring arbutin. A gentle yet effective skin-brightening and depigmenting agent that inhibits tyrosinase activity to reduce melanin production.
- Brightening: Targets dark spots, post-inflammatory hyperpigmentation, and uneven skin tone.
- Gentle: Safer alternative to hydroquinone with no known photosensitivity risk.
- Stable: More stable than beta-arbutin and effective at lower concentrations.
Salix Alba (Willow) Bark Extract <1%Promising
A natural botanical source of salicin, which has anti-inflammatory, antiseptic, and astringent properties. Often described as a gentler, natural cousin of salicylic acid.
- Anti-inflammatory: Contains natural salicylates that help soothe redness and irritation.
- Tonic & astringent: Helps refine skin texture and tighten pores.
Propolis Extract <1%Promising
A resinous mixture produced by honeybees, known for its antimicrobial, anti-inflammatory, and wound-healing properties. Supports acne-prone skin recovery.
- Antimicrobial: Contains flavonoids and phenolic compounds that fight bacteria.
- Healing: Promotes tissue regeneration and accelerates skin repair.
Aloe Barbadensis Leaf Extract <1%Proven
A well-known soothing and hydrating botanical that calms irritated skin, provides moisture, and supports the skin’s natural healing process.
- Soothing: Reduces redness and calms inflammation on contact.
- Hydrating: Contains polysaccharides that help lock in moisture.
Calendula Officinalis Flower Extract <1%Promising
A gentle flower extract with anti-inflammatory and wound-healing properties. Traditionally used to calm sensitive, irritated, and acne-prone skin.
- Calming: Reduces inflammation and soothes redness.
- Regenerative: Supports skin cell renewal and healing of minor blemishes.
Allantoin <1%Proven
A soothing and skin-protecting agent that promotes cell proliferation and wound healing. Helps soften and smooth the skin while reducing irritation.
- Skin protectant: FDA-recognized skin protectant that promotes cellular regeneration.
- Anti-irritant: Helps soothe and calm skin after active ingredient application.
19 ingredients
Aqua, Niacinamide, Propanediol, Glycerin, Zinc PCA, Phenoxyethanol, Alpha-Arbutin, Salix Alba Bark Extract, Polysorbate 20, Aloe Barbadensis Leaf Extract, Hydroxyethylcellulose, Potassium Sorbate, Ethylhexylglycerin, Propolis Extract, Hypericum Perforatum Extract, Calendula Officinalis Flower Extract, Allantoin, Salvia Officinalis Leaf Extract, Sodium Benzoate
Where it fits in your routine
ROUTINEUse AM & PM after cleansing and toning. For dry or combination skin, the brand recommends pairing with S'he Vec Hydra Back Baby 2% Hyaluronic Acid serum before moisturizer.
How to use
HOW TO USECleanse
Start with a clean, dry face. Use a gentle cleanser suitable for your skin type and pat dry.
Apply Serum
Dispense 3–4 drops onto your fingertips. Gently press and pat the serum into your skin, focusing on areas with enlarged pores, oiliness, or blemishes.
Wait & Absorb
Allow 15–30 seconds for full absorption before layering the next product. The formula absorbs quickly without stickiness.
Moisturize & Protect
Follow with your moisturizer. In the morning, always finish with a broad-spectrum SPF 30+ sunscreen.
Who is it for?
WHOPerfect for you if:
- You have oily or combination skin with visible pores
- You struggle with excess sebum and midday shine
- You want to fade acne marks and post-inflammatory hyperpigmentation
- You prefer a lightweight, fragrance-free formula
- You want an affordable serum with multiple proven actives
- You follow a vegan and cruelty-free skincare routine
Consider alternatives if:
- You have fungal acne (contains Polysorbate 20)
- You have very sensitive, eczema-prone, or rosacea skin
- You are pregnant or breastfeeding (consult your doctor first)
- You need deep hydration (pair with a heavier moisturizer)
- You have an aspirin or salicylate sensitivity
Skin type compatibility
SKIN TYPESThis serum was designed specifically for oily skin. Zinc PCA regulates sebum, niacinamide controls shine, and the lightweight texture absorbs instantly with a matte finish.
Balances oily T-zone while the glycerin and propanediol provide light hydration to drier cheeks. The brand recommends pairing with Hydra Back Baby for extra moisture.
Non-comedogenic (1/5), anti-inflammatory, and antimicrobial. Targets root causes of acne: excess oil, bacteria, and inflammation. User reviews report visible clearing within days.
Lightweight formula may not provide enough hydration alone. Beneficial for pore and tone concerns but must be layered with a rich moisturizer or hydrating serum.
Fragrance-free and paraben-free, which is a plus. However, the brand notes it is not suitable for eczema, rosacea, or highly irritated skin. Patch test is recommended. Start every other day.
Results timeline
WEEK 6–8Immediate Mattifying Effect
Skin feels smoother immediately after application. Oily shine is noticeably reduced throughout the day. Some users report visible improvement within the first few uses.
70% noticed reduced oilinessPore Refinement Begins
Pores start to appear visibly smaller. Skin texture improves and feels more refined. Active breakouts begin to calm down as inflammation is reduced.
60% noticed smaller-looking poresBlemish Fading & Sebum Balance
Post-acne marks and dark spots begin to lighten. Zinc PCA reaches its clinically proven 28-day sebum reduction milestone. Skin tone appears more even.
65% noticed fading blemishesFull Brightening & Clarity
Significant improvement in overall skin radiance and clarity. Hyperpigmentation continues to fade. Skin barrier is strengthened and more resilient.
75% noticed brighter, clearer skinRatings by platform
3K+ REVIEWSPros & cons
BALANCEDPraised
- Effective oil control and pore minimizing visible within days
- Contains both niacinamide AND alpha-arbutin for dual brightening action
- Clean, short 19-ingredient formula with no harsh chemicals
- 100% vegan, cruelty-free, and dermatologically tested
- Fragrance-free, paraben-free, alcohol-free, and silicone-free
- Lightweight, fast-absorbing, non-sticky texture
- Enriched with calming botanicals (propolis, calendula, aloe)
- Affordable pricing for a multi-active serum
Criticized
- Small 30ml bottle may not last long with twice-daily use
- Not fungal acne safe (contains Polysorbate 20)
- Not recommended for eczema, rosacea, or very sensitive skin
- 10% niacinamide may be too strong for niacinamide-sensitive individuals
- Contains Salix Alba Bark Extract (natural salicylates) which requires caution during pregnancy
- Limited availability outside Turkey; harder to find internationally
Budget-friendly alternatives (dupes)
DUPESThe most direct competitor with identical niacinamide and zinc PCA concentrations. Simpler 11-ingredient formula without alpha-arbutin or botanical extracts. More widely available worldwide but has a slightly stickier texture.
Same core actives at matching concentrations. Does not include alpha-arbutin or the botanical complex found in Hi Girls Bye Pores. Good budget alternative if you only need oil control and pore refinement.
Contains 10% niacinamide but uses zinc sulfate instead of Zinc PCA. Lacks alpha-arbutin and botanical soothing extracts. More basic formula but very gentle and affordable.
Comparison with competitors
SIDE-BY-SIDEStorage & shelf life
12 MONTHS12 months after opening
Store in a cool, dry place away from direct sunlight. Keep tightly closed after each use. No refrigeration required.
Glass dropper bottle with pipette applicator for precise, hygienic dispensing
Yes, 30ml is well under the 100ml carry-on liquid limit
Frequently asked questions
FAQUse with caution. The formula contains Salix Alba (Willow) Bark Extract, a natural source of salicylates. While this is not the same as synthetic salicylic acid and is present at a very low concentration, salicylates are generally advised against during pregnancy. All other ingredients (niacinamide, zinc PCA, alpha-arbutin, glycerin) are considered pregnancy-safe. Consult your healthcare provider before use during pregnancy or breastfeeding.
No. This serum contains Polysorbate 20, which is a polysorbate emulsifier known to feed Malassezia yeast and potentially worsen fungal acne (pityrosporum folliculitis). If you have fungal acne, consider The Ordinary Niacinamide 10% + Zinc 1% instead, which has a fungal-acne-safe formulation without polysorbates.
Yes to all three. Niacinamide is compatible with retinol, vitamin C, and AHA/BHA acids. With retinol: apply this serum first to buffer potential irritation. With vitamin C: ideally use vitamin C in AM and this serum in PM, or wait 10–15 minutes between products. With AHA/BHA: apply acids first on clean skin, wait 15–20 minutes, then follow with this serum to soothe and protect.
This serum is specifically formulated for oily and acne-prone skin. It also works excellently for combination skin. Dry skin types can use it but should pair with a richer moisturizer. The brand explicitly states it is not suitable for sensitive, eczema, rosacea, or irritated skin types. If you have sensitive skin, patch test first and introduce gradually.
Many users report visible improvements in oiliness and texture within the first few days. Pore refinement typically becomes noticeable within 1–2 weeks. Blemish fading and skin tone evening take 3–4 weeks, which aligns with the clinically proven 28-day timeline for Zinc PCA sebum reduction. Full brightening and clarity benefits are usually seen at 6–8 weeks of consistent twice-daily use.
Apply after cleansing and toning, but before moisturizer and sunscreen. As a water-based serum, it follows the thinnest-to-thickest layering principle. In a full routine: Cleanser → Toner → Hi Girls Bye Pores Serum → Moisturizer → Sunscreen (AM). Use both morning and evening for best results.
This serum has a comedogenic rating of 1/5, meaning it is very unlikely to clog pores. The formula contains no oils, waxes, or known pore-clogging ingredients. It is free of silicones, mineral oil, and heavy emollients. The niacinamide and zinc PCA actually help unclog pores by regulating sebum and reducing congestion.
The serum has a Period After Opening (PAO) of 12 months. Store in a cool, dry place away from direct sunlight and keep the dropper cap tightly closed after each use. If the color, smell, or texture changes noticeably, discontinue use. At twice-daily use (6–8 drops per day), the 30ml bottle typically lasts 4–6 weeks.
Verdict: S'he Vec Hi Girls Bye Pores is an impressive multi-active serum that goes beyond the basic niacinamide + zinc formula by adding Alpha-Arbutin for brightening and a rich botanical complex for soothing. The clean, 19-ingredient formula delivers proven oil control, pore refinement, and blemish fading at an affordable price point. It earns high marks for its vegan, cruelty-free, fragrance-free profile and fast-absorbing lightweight texture. The main drawbacks are its unsuitability for fungal acne (due to Polysorbate 20), the small 30ml size, and caution needed during pregnancy. For oily and acne-prone skin types looking for an upgraded niacinamide serum with added brightening power, this is an excellent choice that punches above its weight.
Product Overview
Quick product notes are a great way to check if a product is free from commonly avoided ingredients by skincare enthusiasts. These preferences come about for different reasons depending on the ingredient such as personal experiences, sensitivities, health preferences & etc.
Just because a product is not free from a common preference does not mean it's a bad product! You can make a personal decision whether or not you want to use a product that contains these ingredients or not - click the labels of the preference to read more about them.
Quick Product Notes
Ever used a product that promised a certain effect but provided no results? It might not have contained any notable ingredients that could have been responsible for that promised effect. It doesn't matter what the marketing or packaging «promises» it can do, if it doesn't contain anything that can help - then the likelihood of it helping is low.
We help you identify key notable ingredients that have been shown to help with effects such as acne-fighting, brightening, UV-protection, wound healing & anti-aging to help you achieve your skincare goals smarter. Please note that different notable ingredients have varying levels of research behind them, some are extremely well proven yet some have mixed research in their efficacy.
Just because a product doesn't contain any notable ingredients doesn't mean it's bad. And a product with notable ingredients (or even many) doesn't necessarily guarantee the efficacy of the product performing these effects either. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine this.
Be smart and use this as just a starting point for you to make more informed and smarter choices and compare it with reviews to see if the product is right for you
Notable Effects & Ingredients
Why are some products great for some people and horrible for others? Well everyone has different skin types and different reactions to the same ingredients.
We've identified a range of ingredients that are commonly regarded as potentially good or bad for those with Dry, Oily/Acne-Prone or Sensitive skin.
A product that contains good or bad ingredients for your skin type doesn't always flat out make the entire product good or bad for your skin. There are other factors such as ingredient quality, concentration and formulation that will ultimately determine your skins reaction.
One of the best ways to use this section is to troubleshoot products you've had bad experiences with in the past. Check if it contains any of the marked ingredients to point out suspect ingredients to avoid in the future!
Ingredients Related to Skin Types
Ingredient Safety Breakdown refers to the percentage % of ingredients in different risk categories as classified by EWG (Environment Working Group) if they are available. There are almost endless cosmetic ingredients and they are one of the few organisations globally that have assigned ratings to a lot of the more commonly used ingredients which is why we reference them.
EWG is seen by many to be more on the alarmist side in their assignment of health ratings resulting in rating ingredients as riskier than they actually are. We recommend using this a reference point rather than a strict guide of ingredient safety and to always do further research if into ingredients that you may find suspect.
Ingredient Safety Breakdown
Product ingredient list
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
| 1 |
Water
Solvent, Skin Conditioning
|
|
|
| 1 |
Niacinamide
Skin Conditioning, Hair Conditioning, Smoothing
|
Promotes Wound Healing
Redness
Irritation
Dark Spots
Pores
|
|
| 1 |
Propanediol
Solvent, Viscosity Controlling, Viscosity Decreasing Agent
|
|
|
| 1 |
Alpha-Arbutin
Antioxidant, Skin Conditioning, Bleaching
|
Dark Spots
|
|
| 2 |
Glycerin
Solvent, Perfuming, Fragrance, Humectant, Viscosity Decreasing Agent, Hair Conditioning, Skin Protecting, Denaturant, Skin Conditioning
|
Promotes Wound Healing
Hydrating
|







