About the writer
Nick
Founder of Skinli
Nick built Skinli after years of trying acne plans made for other people's skin. He is not a doctor or a nurse. The lessons here are simple tips a beginner can follow safely. They do not replace seeing a doctor.
What Nick has not published yet
A last name, a photo, and a professional profile (for example LinkedIn) are not yet on this page. Nick is not a doctor, a nurse, or a dermatologist, and the guides on this site are general education, not medical advice.
Writes about
- acne routines for beginners
- salicylic acid
- benzoyl peroxide
- sunscreen for acne-prone skin
- moisturizer
Guides by Nick
- Humidifiers and skin: what they do and do not fix
- Coffee and acne: what the studies measured
- Creatine and acne: what the research shows
- Travel acne: why skin breaks out on trips
- Hard water and acne: what the evidence says
- LED light therapy for acne: blue, red and masks
- Double cleansing for acne: is it worth it?
- Is a sauna good for acne? Sauna and steam
- Does chlorine cause acne? Swimming and skin
- Does shaving cause acne? How to shave with it
- Do hot showers cause acne? What to know
- Does drinking water help acne? The evidence
- Acne triggers: which daily habits actually matter
- Toner for acne-prone skin: do you need one and how
- Phone screens and acne: do screens cause breakouts
- Humidity and acne: does climate make it worse
- Cold weather and acne: winter breakouts explained
- Chin acne in adults: causes and what helps
- Beard and mustache acne: causes and treatment
- Spironolactone vs birth control for hormonal acne
- DHT and acne: does hair loss treatment affect skin
- Retinal vs retinol vs tretinoin: how they differ
- Tretinoin strengths: 0.025%, 0.05%, 0.1% compared
- Vitamin C serum for acne scars: how and when to use
- Gut health and acne: what the research actually shows
- Washing your face too often: how many times a day
- Smoking and acne: does smoking cause breakouts
- Centella asiatica (cica) for acne: what it does
- Sleep and acne: does too little sleep cause breakouts
- Acne around the mouth: causes and treatment
- Acne face map: what acne location can tell you
- Acne on cheeks: causes, hormones and treatment
- Acne on one side of the face: causes and care
- Hairline acne: causes, pomade acne and treatment
- Neck acne: causes, look-alikes and treatment
- Perioral dermatitis: signs, causes and treatment
- Pimple in ear: causes, ear lobe bumps and care
- Pimple inside the nose: causes and warning signs
- Pimple on eyelid: stye, chalazion or milia?
- Pimples on eyebrows: causes and look-alike bumps
- Acne treatment for sensitive skin: how to start
- Body wash for sensitive skin: what to look for
- Exfoliator for sensitive skin: what the AAD advises
- Eye cream for sensitive skin: what to look for
- Face wash for sensitive skin: what to look for
- Fragrance-free vs unscented: what labels mean
- Laundry detergent for sensitive skin: what to know
- Makeup for sensitive skin: labels, eyes, removal
- Moisturizer for sensitive skin: types and labels
- Retinol for sensitive skin: how to start slowly
- Shaving cream for sensitive skin and how to shave
- Sunscreen for sensitive skin: the AAD's advice
- Vitamin C serum for sensitive skin: how to start
- Skin cycling: the 4-night routine, and acne
- How to patch test skincare on sensitive skin
- What hypoallergenic actually means on a label
- Skin allergy or irritation? How to tell them apart
- Why is my skin suddenly sensitive?
- Can you get a pimple anywhere?
- How to know if you have sensitive skin
- Squalane and acne-prone skin: does it clog pores
- Pimple in your armpit: causes
- Pimples on your breast: causes
- Pimple on your temple: causes
- Pimple inside your lip: what it is
- Pimple on your lip line: what it is
- Ceramides: what they do for acne-prone skin
- Lactic acid for acne and dark spots: how it works
- Glycolic acid for acne: what it does, how to use it
- Apple cider vinegar for acne: what evidence shows
- Witch hazel for acne: what it does and its limits
- Aloe vera for acne: what small trials found
- Aspirin mask for acne: does crushed aspirin help?
- Baking soda for acne: does it help or irritate?
- Castor oil for acne: what a 2026 review found
- Coconut oil for acne: does it clog pores?
- Garlic for acne: no trial, and a risk of burns
- Green tea for acne: lotion, pills and tea bags
- Home remedies for acne: which ones have evidence
- Honey for acne: what the one trial found
- Hydrocortisone on a pimple: acne is a side effect
- Hydrogen peroxide for acne: the cream vs the bottle
- Jojoba oil for acne: what one mask study found
- Lemon juice for acne: no trial, and a sun risk
- Neosporin on a pimple: no acne use, allergy risk
- Rosehip oil for acne: no study in people
- Rubbing alcohol for acne: the AAD says to avoid it
- Salt water for acne: no trial has tested it
- Turmeric for acne: studies and skin reactions
- Vaseline and acne: the AAD and a review disagree
- Gentle cleanser for tretinoin: what labels say
- Clindamycin and tretinoin together for acne
- Does tretinoin expire? Dates and storage
- How long does tretinoin take to work? A timeline
- How to get tretinoin: it needs a prescription
- How to use tretinoin: the steps on the label
- Hydroquinone and tretinoin together for melasma
- Is tretinoin a steroid? Its drug class explained
- Moisturizer with tretinoin: before or after?
- Retin-A vs tretinoin: brand and generic compared
- Salicylic acid with tretinoin: can you use both?
- Sunscreen for tretinoin users: SPF and timing
- Tretinoin before and after: what trials found
- Tretinoin cream vs gel: what the labels show
- Tretinoin for stretch marks: what studies show
- Tretinoin for wrinkles: what the label says
- Tretinoin on a popped pimple: is it safe?
- Tretinoin side effects: what the labels list
- Tretinoin under eyes: what the labels warn
- Tretinoin vs isotretinoin (Accutane): differences
- Tazarotene vs tretinoin for acne: how they differ
- Tretinoin cream: what it is, what it does, its uses
- What happens if you stop using tretinoin?
- Sweat, gym gear and back acne: a workout routine
- Toothpaste on a pimple: why dermatologists say no
- Pillowcases and acne: how often to change them
- Does makeup cause acne? Non-comedogenic, safe wear
- Maskne: why masks cause breakouts and how to stop
- Keratosis pilaris vs acne: how to tell them apart
- Face masks for blackheads: peel-off, clay, charcoal
- Sulfur for acne: what it does and how to use it
- Tea tree oil for acne: does it help pimples?
- Doxycycline for acne: how it works and how long
- Scalp acne: pimples, blackheads and whiteheads
- Can stress cause acne? Stress vs hormonal acne
- Acne diet: what research says about food and skin
- Alcohol and acne: drinking, antibiotics, skin
- Biotin and acne: what the research shows
- Chocolate and acne: cocoa, sugar and the trials
- Fish oil and acne: omega-3 doses and evidence
- Gluten and acne: does going gluten-free help?
- Greasy food and acne: fried food, fast food, grease
- High glycemic foods and acne: what trials show
- Milk and acne: skim, whole and what studies show
- Vitamin A and acne: doses, safety and pregnancy
- Whey protein and acne: shakes, isolate, back acne
- Zinc for acne: dose, type, timing and safety
- Gentle cleansers for a damaged skin barrier
- Damaged skin barrier: signs, causes and repair
- How long does skin purging last? Stages and timing
- How to repair a damaged skin barrier, step by step
- Moisturizer for a damaged skin barrier: what to use
- Bumps after over-exfoliating: what they are
- Over-exfoliated skin: signs and how to fix it
- Signs of a damaged skin barrier, and what causes it
- Can a damaged skin barrier cause acne?
- Tretinoin purging: timeline and what helps
- Why does my skincare sting? Causes and what to do
- Birth control for acne: which pills help and how
- Hormonal acne in men: causes and treatment
- Hormonal acne treatment: what works, step by step
- Jawline acne: causes and what helps
- Menopause acne: causes and treatment
- Natural remedies for hormonal acne: what works
- PCOS acne: signs, causes and treatment
- Period acne: why it happens and how to prevent it
- Pregnancy acne: causes, timing and safe care
- Spironolactone for acne: uses and side effects
- Supplements for hormonal acne: the evidence
- When does hormonal acne stop? Ages and timelines
- Acne body wash: benzoyl peroxide or salicylic acid
- Acne mechanica: backpacks, straps and tight clothes
- Acne on arms and thighs, and inner thigh blackheads
- Acne on the back of the neck: causes and treatment
- Folliculitis or acne? How to tell body bumps apart
- Body acne spray: does it work and how to use it
- Body acne: how to get rid of it and what causes it
- Cystic acne on the back: causes and treatment
- Can shampoo and conditioner cause back acne?
- Shoulder acne: what causes it and how to treat it
- Does sweat cause acne? Sweat and body acne
- Benzoyl peroxide: what it does and how to use it
- Benzoyl peroxide before and after: what to expect
- Does benzoyl peroxide help acne scars?
- Benzoyl peroxide for folliculitis: does it help?
- Benzoyl peroxide and moisturizer: which goes first?
- Benzoyl peroxide cream or gel: which to choose?
- Does benzoyl peroxide cause purging?
- Clindamycin and benzoyl peroxide gel: how it works
- Is benzoyl peroxide safe? Side effects and allergy
- Does benzoyl peroxide bleach skin, hair or towels?
- Benzoyl peroxide 2.5%, 5% or 10%: which strength?
- Benzoyl peroxide face wash: how and when to use it
- What is milia? Causes, removal and lookalikes
- White bumps on the face that are not milia
- Milia vs whiteheads: how to tell them apart
- What causes milia? Primary and secondary causes
- Baby milia: newborn white spots explained
- Milia on lips: causes, lookalikes and removal
- Milia under the eyes and on the eyelids
- Salicylic and glycolic acid for milia
- Retinol, adapalene and tretinoin for milia
- Can you pop milia? Why home removal goes wrong
- Milia removal: how doctors extract milia
- Can you drink on Accutane? Alcohol and isotretinoin
- Accutane and depression: the label and the studies
- Accutane and pregnancy: the risks and iPLEDGE rules
- Accutane before and after: results and relapse
- Accutane lips: why they dry out and what helps
- Accutane hair loss and weight changes: the evidence
- Accutane purge: why acne can flare at the start
- Accutane side effects: common, serious and lasting
- Accutane (isotretinoin): uses, risks and results
- How long does Accutane take to work? A timeline
- How to get Accutane: prescriber, iPLEDGE, pharmacy
- Low dose Accutane: what the label and studies say
- What is azelaic acid? Benefits, uses and risks
- Azelaic acid before and after: what to expect
- Is azelaic acid safe during pregnancy?
- Does azelaic acid help with acne? What trials show
- Azelaic acid for perioral dermatitis: the evidence
- Azelaic acid for rosacea: what the trials show
- Azelaic acid gel, cream, foam or serum: which one?
- Azelaic acid 10%, 15% or 20%: which strength?
- Can you use azelaic acid with niacinamide?
- Azelaic acid and tretinoin: how they compare
- Does azelaic acid cause purging? What labels say
- Is azelaic acid an exfoliant? How it differs
- Acne scar treatment: every option, compared
- Home remedies for acne scars: what evidence shows
- Does tretinoin help acne scars? What studies show
- Dermal fillers for acne scars: types and risks
- Subcision for acne scars: how it works, results
- Chemical peels for acne scars: which peel, risks
- Microneedling for acne scars: what to expect
- Laser treatment for acne scars: results and risks
- Back acne scars: how to get rid of them
- Raised acne scars: hypertrophic scars and keloids
- Are acne scars permanent? What fades, what stays
- Types of acne scars: ice pick, boxcar, rolling
- Blind pimple: what it is and how to treat it
- DIY pimple patch: what works and what to skip
- Do pimple patches work on blackheads?
- How long to leave a pimple patch on
- Ice on a pimple: does it help?
- Microneedle pimple patches: do they work?
- Pimple on tongue: what it is and how to treat it
- Can you put a pimple patch on a cold sore?
- Should you pop a pimple? What dermatologists say
- Warm compress for a pimple, including on the lip
- What to do after popping a pimple
- Blackheads in your ear: causes and safe care
- Blackheads on your back: why and what helps
- How to get rid of blackheads on your nose
- Closed comedones: causes and how to clear them
- Comedone extractors for whiteheads: are they safe?
- How a dermatologist removes blackheads
- How to get rid of blackheads: what works
- How to get rid of whiteheads without picking
- Pore strips for blackheads: do nose strips work?
- What causes blackheads, and how to stop new ones
- Whiteheads on your nose: causes and treatment
- Acne on darker skin: care that avoids dark marks
- Acne serums: how to read the label first
- Acne spot treatment: when dabbing one pimple helps
- Adapalene for blackheads and whiteheads
- Adapalene vs tretinoin for acne: what differs
- Adult acne: causes and what helps
- Can you use AHA and BHA together?
- Azelaic acid for dark spots: what it does
- Can you use azelaic acid with retinol?
- How to get rid of back acne, step by step
- Can you use benzoyl peroxide with vitamin C?
- Best acne treatments, according to the guidelines
- Blackheads vs whiteheads: what is the difference
- How to build a skincare routine from scratch
- Butt acne: what causes it and what helps
- Can dry skin cause acne and pimples?
- Can eczema be cured permanently? What to expect
- Can niacinamide cause acne or purging?
- Can rosacea be cured or go away for good?
- Can salicylic acid cause breakouts or purging?
- Can you tan with sunscreen on? What happens
- How to get rid of chest acne
- How to choose a cleanser for acne-prone skin
- Combination skin: how to care for two skin types
- Cystic acne: what it is, causes and treatment
- Dark marks after pimples: why they form and fade
- Dark spots on darker skin: what fades them
- Dehydrated skin vs dry skin: what the terms mean
- Differin gel and adapalene: strengths and forms
- Do Black people need sunscreen? What the AAD says
- Does eczema go away? Children and adults
- Does retinol make acne worse at first?
- Does retinol work for acne? What the evidence says
- Does sunscreen block vitamin D? What studies show
- Does sunscreen expire? How long it lasts
- Dry, flaky patches on your face: causes and care
- What causes eczema flare-ups? Common triggers
- Eczema on the face: causes and how to treat it
- Eczema vs dry skin: how to tell them apart
- The Fitzpatrick skin scale: the six skin types
- Forehead and chin acne: common causes
- Fungal acne: what it is and how doctors treat it
- Can you use glycolic acid with retinol?
- How to make natural sunscreen: why DIY is unsafe
- How does sunscreen work, and what does SPF mean?
- How long do dark marks take to fade?
- How long to wait between skincare steps
- How many skincare products do you need?
- When and how often to exfoliate your face
- How often to reapply sunscreen, and why
- How to calm a rosacea flare-up
- How to choose a sunscreen for your face
- How to find your skin type: oily, dry or both
- Can you get rid of a pimple overnight?
- How to get rid of acne fast: realistic timelines
- How to get rid of acne naturally: the evidence
- How to get rid of acne: a step by step plan
- How to get rid of dark spots on your face
- How to get rid of pimples without popping them
- How to start a skincare routine
- How to start retinol for acne without irritation
- How to treat dry skin on your face
- How to treat eczema: what a doctor may offer
- How to treat rosacea: what a doctor may offer
- How and when to use a niacinamide serum
- How to use salicylic acid on your face
- Can you use hyaluronic acid with retinol?
- Hyperpigmentation: what it is and what fades it
- Is eczema an autoimmune disease? What research says
- Is eczema contagious? What can and cannot spread
- Is retinol bad for you? Side effects and safety
- Is rosacea autoimmune or contagious?
- Is sunscreen bad for you? What FDA and NCI say
- Melasma: causes, triggers and treatment
- Mineral vs chemical sunscreen: which is better?
- How to choose a moisturizer for acne-prone skin
- Moisturizer with retinol: what to use and when
- Moisturizing and bathing for eczema-prone skin
- Morning vs night skincare routine: what differs
- Is niacinamide safe during pregnancy?
- Does niacinamide help with acne? The evidence
- Niacinamide for dark spots: does it help?
- Is niacinamide good for dry skin?
- Is niacinamide good for oily skin?
- Does niacinamide shrink pores? What studies show
- Niacinamide for redness and sensitive skin
- Which niacinamide percentage should you use?
- Niacinamide side effects and what they mean
- Niacinamide vs niacin: pills, flushing and skin
- Can you use niacinamide with retinol?
- Can you use niacinamide with tretinoin?
- Can you use niacinamide with vitamin C?
- Ocular rosacea: when rosacea affects the eyes
- Oily skin routine: how to control oil and shine
- Over-the-counter acne treatments: what to buy
- Pimple on lip or cold sore? How to tell
- Pimple on nose: causes and what to do
- Pimple patches: what they do and when they help
- Prescription retinoids for acne: the options
- Retinoid dryness and peeling: what to do
- Retinoid with benzoyl peroxide: can you use both?
- Retinoids during pregnancy and breastfeeding
- Retinoids for acne: retinol, adapalene, tretinoin
- Retinoids for teens: what the sources say
- Retinol and tretinoin for dark spots
- Retinol before and after: what to expect by week
- Retinol vs adapalene for acne: how they differ
- Retinol vs retinoid: is tretinoin a retinol?
- Rosacea symptoms: signs on the skin and eyes
- Rosacea triggers: how to find and avoid yours
- Rosacea vs acne: how to tell them apart
- Salicylic acid during pregnancy: what sources say
- Salicylic acid for acne: what it can and can't do
- Salicylic acid for blackheads: how it works
- Salicylic acid for oily skin: does it help?
- Salicylic acid side effects: dryness to allergy
- Salicylic acid strengths and forms explained
- Salicylic acid vs glycolic acid: how they differ
- Can you use salicylic acid with niacinamide?
- Can you use salicylic acid with retinol?
- Sebaceous filaments: do they mean oily skin?
- Sensitive skin: signs, triggers and gentle care
- Severe acne: when to see a dermatologist
- Skin discoloration: causes and when to worry
- Skincare for rosacea: a gentle daily routine
- A simple skincare routine for teens
- Skincare routine order for every skin type
- Skincare steps explained: what each one does
- Sun spots: what they are and how to fade them
- Sunscreen for acne-prone skin: what to look for
- Sunscreen for rosacea: what to look for
- Types of acne: how to tell each one apart
- Types of eczema: atopic, contact, discoid and more
- Vitamin C for dark spots: what the evidence shows
- Can you use vitamin C with retinol?
- What causes acne, and what makes it worse
- What causes dry skin, and why is yours so dry?
- What causes eczema? Genes, skin and immune system
- What causes rosacea? What the research shows
- What does eczema look like? Signs and diagnosis
- What retinol does for your skin and how it works
- What rosacea looks like and how it is diagnosed
- What salicylic acid does for your skin
- What makes a good skincare routine?
- What is acne? How a pimple forms
- What is eczema? Symptoms, causes and treatment
- What is reef safe sunscreen? What the label means
- What is rosacea? Signs, causes and care
- What is salicylic acid, and is it a BHA?
- What niacinamide does for your skin
- What non-comedogenic means on a skincare label
- What to mix with a retinoid and what to keep apart
- When can an infant wear sunscreen?
- When a dark spot needs a doctor
- When to use salicylic acid: morning or night
- When to use toner, and do you need one?
- When to use retinol in your skincare routine
- Which skincare ingredients can you mix?
- Why is my face so oily? Causes of oily skin
- Does diet cause acne? What dairy and sugar do
- How accurate are AI acne scanner apps?
- How long does an acne routine take to work?
- How to get rid of acne scars: what works
- Acne skincare routine: every step, in order
- Hormonal acne vs regular acne: signs to look for
- How to patch test skincare before using it
- How to start adapalene without irritation
- How to take acne progress photos that show change
- Salicylic acid vs benzoyl peroxide for acne
- Skin purging vs breakout: how to tell them apart
- What order to apply acne products, day and night
- How to start an acne routine with three products
Lessons by Nick
A guideline acne plan from one photo, in simple words.