5% Niacinamide Serum With Ectoin
5% Niacinamide Serum With Ectoin
Product Description
Product overview
A lightweight, water-based serum from Good Molecules that pairs 5% Niacinamide with Ectoin to refine pores, brighten uneven tone, smooth texture, and deliver deep barrier-supporting hydration — all in a gentle, fragrance-free formula at an accessible price point.
Refines Pores
5% Niacinamide paired with Acetyl Glucosamine visibly minimizes the look of enlarged pores and smooths uneven texture.
Texture & feel
SENSORYRefines Pores
5% Niacinamide paired with Acetyl Glucosamine visibly minimizes the look of enlarged pores and smooths uneven texture.
Brightens Uneven Tone
Targets dullness, post-acne marks, and hyperpigmentation by interrupting melanin transfer to surface skin cells.
Protects & Repairs Barrier
Ectoin forms a hydration shell around skin cells, defending against pollution, UV stress, and moisture loss.
Deep Hydration
Glycerin, Betaine, and Ectoin together pull water into the skin and lock it in — plumping without heaviness.
Gentle, Minimalist Formula
Only 14 ingredients. No fragrance, no alcohol, no essential oils — ideal for reactive and sensitive skin.
Affordable Science
Just $8 for a clinically-backed actives combo — one of the best value niacinamide serums on the market.
Safety & compatibility
SAFEContains no retinoids, salicylic acid, hydroquinone, or chemical sunscreens. Niacinamide and Ectoin are considered safe for use during pregnancy and nursing.
Free of fatty acids, fatty alcohols, esters, and polysorbates. No ingredients on the common Malassezia-feeding list.
Comedogenic rating of 1/5. Oil-free, silicone-free formula unlikely to clog pores even on acne-prone skin.
Modern research confirms niacinamide pairs safely with vitamin C and exfoliating acids. No need to alternate days.
Fragrance-free, alcohol-free, essential-oil-free, and dye-free. Ectoin is clinically shown to calm and strengthen the barrier.
A small minority of users may experience flushing or mild irritation at 5%. Patch-test on the inner arm for 48 hours before full-face use.
Ingredient breakdown
INGREDIENTSNiacinamide (Vitamin B3) 5%Proven
A multi-tasking form of Vitamin B3 and the hero active of this serum. Works by interrupting melanosome transfer, regulating sebum, strengthening the lipid barrier, and calming inflammation — all at the same time.
- Clinical study: A 2004 Journal of Cosmetic Dermatology review (Gehring) confirms topical niacinamide reduces hyperpigmentation, pore size, and fine lines.
- Mechanism: Converts in-skin to NAD/NADP — coenzymes essential for cellular energy and DNA repair.
- Optimal dose: 2–5% delivers full benefits with the lowest irritation risk; higher percentages do not increase efficacy proportionally.
Ectoin ~0.5–1%Proven
An "extremolyte" originally discovered in 1985 in a microorganism surviving an Egyptian salt lake. It binds water molecules to form a protective hydration shell around skin cells, enzymes, and proteins.
- Anti-wrinkle data: A placebo-controlled study on 0.5% Ectoin in the crow's-feet area reported a mean 19% reduction in wrinkle depth after four weeks.
- Pollution defense: Dual-action protection — shields against future damage from UVA/UVB, infrared, blue light, and pollutants, while helping repair existing damage.
- Medical-grade: Used in EU inhalation medicines as an anti-pollution agent, showing its safety and biocompatibility.
Acetyl Glucosamine ~1.9–2.8%Proven
An amino sugar and niacinamide's best friend. Works synergistically with B3 to accelerate cell turnover, reduce pigmentation, and hydrate by supporting natural hyaluronic acid production.
- Synergy effect: A landmark P&G study showed Acetyl Glucosamine + Niacinamide together outperform either alone in reducing hyperpigmentation.
- Barrier support: Helps normalize stratum corneum desquamation (skin shedding) for smoother texture.
- Hydration boost: Precursor to hyaluronic acid — supports the skin's own moisture-retention system.
Glycerin ~1.5–2.3%Proven
The gold-standard humectant — pulls water from the environment and deeper skin layers toward the surface, and supports the skin's lipid barrier.
- Barrier function: Helps keep the lipids between skin cells in a healthy liquid-crystal state for stronger protection.
- Zero irritation profile: Comedogenicity of 0 and irritancy of 0 — safe for every skin type.
- Effective range: Works from as low as 3% with compounding benefits at higher concentrations.
Betaine ~0.6–1.4%Proven
A sugar-beet-derived amino acid and natural osmolyte. Helps regulate cellular water balance and protects proteins from denaturation under stress.
- Osmoprotection: Attracts water away from protein surfaces, increasing their thermodynamic stability.
- Sensory benefit: Gives the serum its silky, non-sticky glide without needing silicones.
Tocopherol (Vitamin E) <0.5%Proven
A lipid-soluble antioxidant that neutralizes free radicals generated by UV and pollution, and helps stabilize the rest of the formula.
- Antioxidant synergy: Regenerates oxidized Vitamin C and extends shelf life of sensitive actives.
- Soothing: Supports skin's natural repair processes after environmental stress.
14 ingredients
Water, Niacinamide, Dipropylene Glycol, 1,2-Hexanediol, Acetyl Glucosamine, Glycerin, Ectoin, Betaine, Ammonium Acryloyldimethyltaurate/VP Copolymer, Xanthan Gum, Sodium Citrate, Ethylhexylglycerin, Tocopherol, Citric Acid.
Where it fits in your routine
ROUTINEApply after watery toners/essences and before heavier creams. Use AM and PM. Always follow with SPF during the day.
How to use
HOW TO USEStart with clean, damp skin
Cleanse and gently pat dry. Leaving skin slightly damp boosts absorption of humectants like Glycerin and Betaine.
Dispense 3–4 drops
Warm a small amount between fingertips. A little goes a long way — the watery texture spreads easily across the whole face.
Press into skin
Pat into face and neck. Avoid the immediate eye area. Allow 30–60 seconds to absorb fully before the next step.
Seal with moisturizer
Follow with a moisturizer containing occlusives (squalane, shea butter, ceramides) to lock hydration in.
Daily AM + PM
Use morning and night. In the morning, always finish with broad-spectrum SPF 30+ to protect brightening progress.
Who is it for?
WHOPerfect for you if:
- You want to minimize visible pore size and refine skin texture
- You struggle with dullness, post-acne marks, or uneven tone
- Your skin is sensitive or reactive and needs a fragrance-free option
- You're pregnant or breastfeeding and want a safe active serum
- You're building an affordable but science-backed routine
- Your barrier feels compromised by pollution, AC, or over-exfoliation
- You need a serum that layers cleanly under makeup
Consider alternatives if:
- You've had confirmed niacinamide sensitivity in the past
- You want a thicker, more emollient serum for very dry skin
- You're targeting deep wrinkles — a retinoid will outperform this
- You prefer a hyaluronic-acid-focused hydration serum
- You need higher strength actives for stubborn melasma
Skin type compatibility
SKIN TYPESWatery, oil-free texture absorbs instantly without shine. Niacinamide helps regulate sebum production over time.
Ectoin and Glycerin add meaningful hydration, but dry skin will need a richer cream layered on top to seal moisture.
Balances oily T-zones while hydrating drier cheeks — the lightweight format suits mixed-zone skin perfectly.
Fragrance-free, essential-oil-free, and alcohol-free. Ectoin actively soothes and strengthens reactive skin.
Non-comedogenic and fungal-acne safe. Niacinamide calms inflammation and fades post-breakout marks.
Ectoin has shown measurable anti-wrinkle activity. Best paired with a retinoid in the evening for deeper age concerns.
Results timeline
8–12 WEEKSSofter, more hydrated feel
Skin feels plump and comfortable right after application thanks to Ectoin's water-binding shell and Glycerin.
92% noticed instant comfortSmoother texture, calmer redness
The barrier feels stronger. Small bumps soften and post-workout or environmental redness appears less often.
74% reported reduced irritationVisible pore refinement
Pores look tighter in the T-zone as niacinamide regulates sebum and acetyl glucosamine smooths surface texture.
68% noticed pore improvementEven, brighter complexion
Post-acne marks and dull patches visibly fade. Tone looks more uniform and skin has a natural glow.
71% saw clearer, more even toneRatings by platform
1K+ REVIEWSPros & cons
BALANCEDPraised
- Exceptional value — powerful actives at $8
- Ectoin is a standout ingredient rarely found at this price
- Watery, non-sticky texture that plays well with makeup
- Noticeably calmer, smoother skin within 2–4 weeks
- Fragrance-free and tolerant for sensitive skin
- Short, clean ingredient list with no filler
- Pregnancy and breastfeeding safe
- Vegan and Leaping Bunny cruelty-free certified
Criticized
- Only 30ml — runs out faster than larger bottles
- Dropper packaging is less sanitary than a pump
- Not enough alone for very dry skin
- No spot/actives at higher strengths for stubborn pigmentation
- Won't address deep wrinkles — needs a retinoid companion
- Rare niacinamide sensitivity can still cause flushing
Budget-friendly alternatives (dupes)
DUPES
Doubles the niacinamide strength and adds zinc, but skips Ectoin and Acetyl Glucosamine. More about oil control, less about barrier hydration.
Lower 2% niacinamide but adds propolis for soothing and glow. More luxurious feel; Good Molecules wins on price and active concentration.
Higher niacinamide percentage with zinc and marula oil. Better for oily skin; Good Molecules is gentler and fungal-acne safe.
Higher niacinamide concentration with hyaluronic acid. Lacks Ectoin's barrier protection — Good Molecules is the calmer choice for sensitive skin.
Comparison with competitors
SIDE-BY-SIDE
Storage & shelf life
12 MONTHS12 months after opening. Unopened shelf life is typically 24–36 months from manufacture date.
Store in a cool, dry place away from direct sunlight. Keep the cap tightly closed to preserve active potency.
30 ml clear glass bottle with a dropper. Consider storing upright and away from windows to protect Tocopherol from oxidation.
Yes — 30 ml is well under the 100 ml TSA/IATA carry-on limit. Glass dropper; pack in a padded pouch or zip bag.
Frequently asked questions
FAQYes. The formula contains no retinoids, salicylic acid, hydroquinone, or chemical sunscreen filters. Both Niacinamide (Vitamin B3) and Ectoin are widely considered safe during pregnancy and breastfeeding. As always, share your full routine with your OB-GYN or dermatologist for personalized advice.
Yes. The full 14-ingredient list contains no fatty acids, fatty alcohols, esters, polysorbates, or oils that feed Malassezia yeast. It is a safe choice for anyone managing pityrosporum folliculitis or fungal breakouts.
Yes to all. Modern research has debunked the old "niacinamide vs. vitamin C" myth — they work well together. Apply this serum before or on alternating steps with retinol, AHA/BHA, and vitamin C. If you're using multiple strong actives, space them a few minutes apart and watch for irritation.
It's suitable for all skin types, but shines for oily, combination, sensitive, and acne-prone skin. Dry and mature skin benefit too, but should layer a richer moisturizer on top. Its gentle, minimalist formula is a strong "starter serum" for anyone new to actives.
Hydration and a calmer complexion appear within the first few applications. Pore refinement and texture improvement typically show by 4 weeks, and visible fading of post-acne marks and tone unevenness by 8–12 weeks of consistent twice-daily use.
Apply after cleansing and toners/essences, but before heavier serums, moisturizers, oils, and SPF. The watery texture means it layers cleanly under almost anything — including makeup. Use morning and night.
No. The formula is oil-free and silicone-free with a comedogenic rating of 1/5 based on the individual ingredients. It's considered non-comedogenic and is widely recommended for acne-prone skin — niacinamide actually helps reduce clogged pores over time.
12 months after opening (PAO). Keep the bottle tightly closed, store away from heat and direct sunlight, and avoid letting the dropper touch skin or fingers to prevent contamination. At twice-daily use, a single 30 ml bottle typically lasts 2–3 months.
Verdict: The Good Molecules 5% Niacinamide Serum with Ectoin is one of the smartest $8 you can spend on skincare. It pairs a well-dosed 5% Niacinamide with the rare and clinically-supported Ectoin to simultaneously refine pores, brighten tone, and defend the barrier — all in a fragrance-free, vegan, 14-ingredient formula that's safe for pregnancy, fungal acne, and sensitive skin. The only real limitation is the 30 ml size. For beginners, sensitive-skin users, and seasoned enthusiasts looking for a clean, affordable multitasker, this is an easy recommendation.
Browse related
Product Overview
What are Quick Product Notes?
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.
Pro Tip Alert!
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
Paraben-Free
Paraben-Free
Understanding Parabens
Parabens are a large group of preservatives which are used to prevent bacteria growing in cosmetic formulations. There has been some healthy controversy surrounding them due to a few studies finding paraben presence in breast tumours and breast tissue. However, the majority of the scientific community have deemed these findings non-conclusive due to the limitations of these studies. There's still a lot of support for avoiding parabens following the better safe than sorry route. If you do we completely support you! If you are concerned about the health safety of parabens, then feel free to avoid them by looking out for the Paraben-Free icon. If not, don't worry about it - they do have had one of the longest safety records as preservatives!
Which Ingredients are classified as Paraben?
A product will be paraben-free if it does not contain any of the following parabens:
- Sodium Isobutylparaben
- Sodium Ethylparaben
- Sodium Butylparaben
- Propylparaben
- Isopropylparaben
- Isobutylparaben
- Sodium Propylparaben
- Butylparaben
- Ethylparaben
- Sodium Methylparaben
- Methylparaben
Sulfate-Free
Sulfate-Free
Understanding Sulfates
Sulfates are a large group of ingredients which act as cleansing agents in Cosmetics. They help loosen up the dirt and grime from your skin and hair to allow for water to wash it away with ease. However some sulfates are so good at their job, they can wash off your skin’s own natural oils that keep it moisturised and protected which can lead to dryness and irritation. Most people will find no issues with sulfate, however if you find your skin doesn't like sulfates then free feel to avoid them by looking out for the sulfate-free icon on Skincarisma.
Which ingredients are classified as sulfates?
We've taken the Sulfates which are considered more harsh for our Sulfate-Free status. A product will be Sulfate-Free if it does not contain any of the following Sulfates:
- TEA-Dodecylbenzenesulfonate
- Ammonium Laureth Sulfate
- Sodium Lauryl Sulfate
- PEG-15 Cocamine
- Sodium Laureth Sulfate
- Sodium Cocoyl Sarcosinate
- Sodium C14-16 Olefin Sulfonate
- Dioctyl Sodium Sulfosuccinate
- Ammonium Xylenesulfonate
- Ammonium Lauryl Sulfate
- Sodium Xylenesulfonate
- Sodium Myreth Sulfate
- Sodium Lauryl Sulfoacetate
Alcohol-Free
Alcohol-Free
Understanding Simple Alcohols
Alcohol ingredients are widely used in cosmetics and come in different types. For the most part alcohols are not problematic at all. However one type of alcohols, simple alcohols can be quite drying to the skin because it evaporates very quickly. This can cause irritation which can also lead to other skin complications. These alcohols should never be used alone on your skin, but combined with other cosmetic ingredients, they are normally without issue. However, for some people with sensitive and easily irritable skin, avoiding products with these simple alcohols may be beneficial. If you find your skin doesn't like these simple alcohols, then free feel to avoid them by looking out for the Alcohol-Free icon.
Which Ingredients are classified as Alcohol?
A product will be alcohol-free if it does not contain any of the following alcohol ingredients:
- SD Alcohol
- Alcohol Denat
- Isopropyl Alcohol
- Alcohol
Silicone-Free
Silicone-Free
Understanding Silicones
If you've ever used a skincare, makeup or beauty product that's made your skin look and feel smoother tempoarily - it's likely contained Silicone. They are a popular class of ingredients found in cosmetics due to their smooth, soft, easy-to-spread and smooth properties that help creates an artificial layer/barrier on top of skin or hair (commonly found in conditioners).
For the same reasons they are popularly used, they are also commonly avoided. Anecdotally, many individuals have reported that Silicones cause/excerbate breakouts, irritation, cause a feeling of skin being unable to breathe, cause clumping of cosmetic products and find it difficult to wash off. As a result, those who find them problematic are avoiding them and increasingly, cosmetic companies are avoiding them as well.
If you have had bad experiences with Silicones in the past, or suspect they are problematic then look out for the tick on the Silicone-free label.
Disclaimer
The Silicone-free label only includes the most common Silicone ingredients that have indentified been reported by individuals that could potentially cause issues.
These include: Amodimethicone, Behenoxy Dimethicone, Bis-Aminopropyl Dimethicone, Cetearyl Methicone, Cetyl Dimethicone, Cyclomethicone, Cyclopentasiloxane, Dimethicone, Dimethicone Copolyol, Dimethiconol, Methicone, Phenyl Trimethicone, Phenyl Trimethicone, Stearoxy Dimethicone, Stearyl Dimethicone, Trimethylsilylamodimethicone.
Note, that this does not include all ingredients part of the Silicone class of ingredients.
EU Allergen-Free
EU Allergen-Free
Understanding the Identified Contact Allergens
The EU's Scientific Committee on Consumer Safety (SCCS) has identified and established 26 cosmetic ingredients that are likely contact allergens (potential to cause skin allergies) as demonstrated in clinical or epidemiological studies. The EU's SCCS have recommend cosmetic companies to disclose them on the labels if used and in cases where the concentration exceeds 0.001% in leave-on products and 0.01% in rinse-off products, then they must be labelled.
Look out for the tick on the EU-Allergen free label to know your cosmetic is free from any of the 26 identified cosmetic ingredients.
For more information regarding the EU's Scientific Committee on Consumer Safety, please visit their official website.
Disclaimer
The EU Allergen Free label is for the 26 ingredients identified by the EU SCCS and products will be only flagged if a suspected ingredient is on it's ingredient list. It is possible for cosmetics to contain one of the suspect ingredients without it appearing on the ingredient list due to it not reaching the concentration threshold to disclose it and cosmetic manufacturers choice to not disclose it.
Also note, the EU Allergen Free label is not personalized for your own allergies you may have and it does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
Fungal Acne (Molassezia) Safe
Fungal Acne (Molassezia) Safe
Understanding Fungal Acne (Pityrosporum Folliculitis/Malassezia Folliculitis)
Pityrosporum Folliculitis/Malassezia folliculitis or simply known as Fungal Acne is a persistent acne-like condition that commonly responds poorly to traditional acne-treating methods. Unlike most cases of Acne where bacteria is the culprit, Fungi is the culprit of Fungal Acne (Hence the name!). There are certain classes & groups of ingredients that have been shown to promote and feed the growth of the Fungal Acne, Fungi such as fatty acids, oils, esters, polysorbates and fermented ingredients.
For more information regarding Fungal Acne, please visit Simple Skincare Science (f.c) - #3 of our Recommend Skincare Resources for an amazing comprehensive guide!
Please Read: How to use the Fungal Acne (Malassezia) Label
At SkinCarisma, we've done our best to identify as many ingredients as possible but note the fungal-free label may not be 100% accurate due to the complexconditions and combination of ingredients that malezzeria can thrive on.
Additionally, products that may contain ingredients that have shown to feed Malassezia may not neccessarily exacerbate the condition due to concentration of ingredient used in the product, this information is simply not available on the products.
As a result, please note this is only an experimental label that can be best used to possible identify problematic products you have used in the past. It is in no way a perfect identifier nor a predictor in whether or not it will exacerbate or cause fungal acne. It will continue to be worked on as more information and research comes to light.
If you find any ingredients you believe should be included, please email us at snails@skincarisma.com.
Disclaimer
Due to the lack of substantial research into this area it is very likely there are other ingredients and class/groups of ingredients that could feed Fungal Acne which have not been indentified.
The Fungal-Safe label does not constitute as medical advice. For your specific case, always consult your medical professiona such as dermatologist, physician, pharmacist, or health care provider - please read our medical disclaimer for more information.
What are Notable Effects & Ingredients?
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.
Pro Tip Alert!
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
What are Ingredients Related to Skin Type?
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.
Pro Tip Alert!
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
Dry Skin
Oily/Acne-Prone Skin
Sensitive Skin
What is the Ingredient Safety Breakdown?
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.
Pro Tip Alert!
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.