What Causes Dry Lips? Understanding the Causes, Symptoms, Remedies, and Prevention

Reading Time: 13 minutes
Dry lips

Dry or chapped lips are a common problem that many people experience, especially in dry weather or when the body is dehydrated. However, if dry lips occur frequently or don’t improve even after applying lip balm, it may signal an underlying issue that needs attention.


This article explains the causes of dry lips, how to treat them effectively, and ways to prevent recurrence — helping you maintain soft, hydrated, and healthy lips.

Table of content :  Dry lips


What Are Dry Lips?

What are dry lips

Dry lips occur when the lips lose their natural moisture, causing peeling, cracking, tightness, or burning sensations. This condition can result from various external and internal factors. Frequent or persistent dryness may also signal an underlying health issue that needs medical attention.


What Causes Dry Lips?

Dry lips can develop from many causes — including environmental conditions, daily habits, certain medications, and underlying health problems.

Understanding the root cause helps determine the right treatment and long-term prevention.

1. Environmental Factors

  • Cold or dry weather reduces moisture and causes dehydration of the lips.
  • Air conditioning makes indoor air dry and is a major cause of lip dryness.
  • UV rays and strong winds accelerate moisture loss from the lips.

2. Daily Habits

  • Drinking too little water — dehydration is the most common cause of dry lips.
  • Frequently licking your lips — saliva evaporates quickly, making dryness worse.
  • Smoking and alcohol consumption — both reduce hydration and blood flow to the lips.
  • Excessive caffeine intake — coffee and tea act as diuretics, increasing water loss.

3. Medications and Treatments

  • Antihistamines — reduce saliva production, causing dryness in the mouth and throat.
  • Diuretics — commonly prescribed for hypertension, increase water excretion.
  • Antidepressants or neurological medications — may affect the body’s water balance.
  • Cancer treatments (chemotherapy or radiotherapy around the head and neck) — reduce saliva secretion.

4. Health Conditions

  • Diabetes — high blood sugar draws water from cells, causing dry lips and mouth.
  • Autoimmune diseases (e.g., Sjögren’s syndrome) — damage to the salivary and tear glands, resulting in chronic dryness. 
  • Vitamin deficiencies — lack of Vitamin B, iron, or zinc makes the lips prone to cracking and peeling.
  • Anemia — poor blood circulation causes pale, dry lips.

5. Age and Hormones

  • Older adults — salivary gland function declines with age.
  • Menopause — estrogen drop leads to drier skin and lips.

Symptoms of Dry Lips to Watch For

Symptoms of dry lips to watch for

Some signs of dry lips can indicate an underlying condition. If you notice these symptoms often, proper care and medical advice may be needed:

  • Cracked, peeling, or flaky lips.
  • Pain or burning when eating or speaking.
  • Wounds or inflammation at the corners of the mouth. 
  • Dry lips at night with a sore or dry throat upon waking.
  • Chronic dryness that affects daily activities or confidence.

What Health Conditions Can Dry Lips Indicate?

Although dry lips are often caused by weather or habits, frequent or chronic dryness may indicate other health concerns, such as:

  • Diabetes Mellitus – symptoms include dry mouth, thirst, and frequent urination. High blood sugar levels draw water from cells, leading to dry lips and skin.
  • Autoimmune Diseases (Sjögren’s syndrome) – the immune system attacks the salivary and tear glands, causing persistent dry lips and eyes, along with fatigue and joint pain.
  • Vitamin and Mineral Deficiency – lack of Vitamins B2, B3, B12, iron, or zinc can cause lip cracks, angular cheilitis, and dry mucous membranes, often seen with anemia and brittle nails.
  • Hormonal Changes and Aging – postmenopausal women or older adults experience dryness due to reduced estrogen or saliva production.

*Note: This information is for general educational purposes only. If your lips are persistently dry, cracked, or painful, or accompanied by other symptoms, consult a doctor for proper diagnosis and treatment.


Are Dry Lips Dangerous? When Should You See a Doctor?

Are dry lips dangerous

In most cases, dry lips are not dangerous and usually improve with proper hydration and lip care. However, if dryness is persistent or chronic, it may cause complications such as:

  • Cracked lips → risk of infection.
  • Angular cheilitis → inflammation at the corners of the mouth, causing pain and slow healing.
  • Dry mouth at night → sore throat or disturbed sleep.
  • Low saliva (Xerostomia) → higher risk of tooth decay, gum inflammation, and bad breath.

When to See a Doctor

  • Dry lips lasting more than 2 weeks despite self-care.
  • Dry lips accompanied by excessive thirst, frequent urination, or weight loss.
  • Dryness of both lips and eyes, or joint pain.
  • Recurrent wounds or inflammation at the corners of the mouth.
V Square Tips

Note: Mild dryness is not harmful and can often be managed with hydration and lip balm. But if symptoms persist, recur frequently, or come with other warning signs, consult a doctor for proper evaluation and targeted treatment.


Things You Shouldn’t Do When Your Lips Are Dry

Many people try to fix dry lips with quick methods that actually make things worse — stripping away natural moisture or even leading to inflammation and infection.

Here’s what to avoid:

  • Licking your lips frequently.
  • Pulling or biting off peeling skin.
  • Scrubbing lips too hard or too often.
  • Using lip balm with irritants or strong fragrances.
  • Drinking too much alcohol or caffeine.
  • Using toothpaste or mouthwash containing alcohol.
  • Staying in air-conditioned or dry environments without protection.

If your lips are dry, focus on proper care instead of these habits — because these can worsen dryness rather than relieve it.


5 Simple Ways to Relieve Dry Lips You Can Do at Home

Are dry lips dangerous

If your lips feel dry, don’t panic — in most cases, it’s easy to manage with simple daily habits that help restore moisture and prevent cracking or inflammation.

1. Stay Hydrated Throughout the Day

Dehydration is the number one cause of dry lips, so drinking enough water is key.

  • Drink around 2.5–3 liters per day.
  • Increase intake if you exercise or spend time in hot weather.
  • Avoid sugary or carbonated drinks, which can worsen dehydration.

2. Use Lip Balm or Ointment with Moisturizing Ingredients

Unlike other parts of the skin, lips don’t have sebaceous glands, so they need extra external moisture.

  • Choose products with Shea Butter, Beeswax, Ceramide, Hyaluronic Acid, or Petroleum Jelly.
  • Reapply frequently, especially after meals or drinks.
  • Avoid formulas with menthol, camphor, cinnamon, or alcohol, as they can irritate lips further.

3. Avoid Licking Your Lips

Many people instinctively lick their lips when they feel dry — but saliva evaporates quickly, pulling away even more moisture.

  • Saliva contains digestive enzymes (like amylase) that irritate the delicate lip skin.
  • Replace the habit with applying lip balm immediately when your lips begin to feel dry.

4. Use a Room Humidifier

Air-conditioning or cold weather creates dry indoor air, which worsens dehydration.

  • Use a humidifier to maintain room humidity at 40–60%.
  • If you don’t have one, place a bowl or glass of water near your bed to increase moisture naturally.

5. Choose Gentle Lip Care Products

The lips are extremely delicate, so use mild and protective products.

  • Choose a lip balm with SPF 15+ to protect against sun damage and pigmentation.
  • Look for fragrance-free and hypoallergenic formulas to avoid irritation.
  • If your lips are severely dry or cracked, switch to rich ointments like Vaseline or Aquaphor for long-lasting hydration.
V Square Tips

Note: Treating dry lips doesn’t need to be complicated — just drink enough water, use a nourishing lip balm, maintain good humidity, and avoid habits that worsen dryness. Your lips will soon feel soft, smooth, and healthy again!


5 Medical Treatments for Dry Lips

If dry lips don’t improve with basic care — such as drinking enough water, using lip balm, or adjusting habits — medical treatments may be necessary. A doctor can identify the underlying cause and choose the right treatment for each case. Here are 5 effective medical options for managing persistent dry lips:

1. Salivary Stimulants

Medications such as Pilocarpine (Salagen) or Cevimeline can stimulate the salivary glands to produce more saliva. They’re especially helpful for patients with Sjögren’s syndrome or post-radiation/chemotherapy dryness, but must be prescribed by a doctor due to possible side effects like excess sweating or rapid heartbeat.

2. Low-Level Laser Therapy (LLLT)

This treatment uses low-intensity laser or LED light to stimulate blood circulation and activate the salivary glands. Studies show that LLLT can reduce xerostomia (chronic dry mouth), particularly in patients receiving radiation therapy.

It’s a non-invasive and painless method with minimal side effects, though multiple sessions may be required for optimal results.

3. Dental Management

Patients with dry mouth (xerostomia) are more prone to tooth decay and gum inflammation.

A dentist may recommend:

  • Artificial saliva sprays or gels to maintain moisture.
  • Fluoride coating to protect teeth.
  • Customized prevention plans to minimize long-term oral complications.

This approach helps protect oral health while addressing dryness symptoms in the long run.

4. Mesotherapy for Lip Hydration

Mesotherapy involves injecting a nourishing blend of ingredients — including Hyaluronic Acid, vitamins, minerals, and antioxidants — around the lips to rehydrate and restore natural smoothness from within.

It’s ideal for people with chronic lip dryness, flaking, or cracking caused by dehydration, even after consistent lip balm use.

Mesotherapy

Benefits:

  • Natural-looking results. (no overfilled effect)
  • Hydration improvement lasts 3–6 months.
  • Minimal downtime — avoid alcohol, smoking, or lip contact for 1–2 days after treatment.

5. Lip Filler for Chronic Dry Lips

Best Lip Filler Brands

Lip filler injections use Hyaluronic Acid (HA) to restore both volume and moisture. Beyond enhancing lip shape and fullness, HA fillers lock in hydration, making lips soft, smooth, and supple again — perfect for those with naturally thin or genetically dry lips where lip balm alone isn’t enough.

Key advantages:

  • Immediate visible results.
  • High safety profile — HA is biocompatible and dissolvable.
  • Long-lasting effects — typically 6–24 months, depending on filler type and aftercare

Always ensure treatment is performed by an experienced doctor using authentic, FDA-approved fillers to prevent side effects and ensure long-lasting, natural results.

Popular lip shapes
Popular lip shapes

Lip Filler Review — Hydrating, Plumping & Perfectly Shaped Lips

Lip filler review

Lip Filler Results — Timeline Overview

Immediately after lip filler injection

  • Lips appear plumper and more hydrated.
  • Mild swelling may occur, which is normal and will gradually subside.

3–7 days after lip filler injection

  • Swelling, redness, or needle marks gradually fade.
  • Lips begin to take shape, feeling softer, smoother, and less flaky.

2–3 weeks after lip filler injection

  • Results become noticeable — lips look hydrated and fuller.
  • The lip contour appears more defined, creating a naturally balanced shape.

3–6 months after lip filler injection

  • Hydration remains; lips do not dry out easily.
  • With proper care, such as drinking plenty of water and avoiding smoking or alcohol, results can last longer.

6–24 months after lip filler injection

  • The filler gradually dissolves naturally; results remain visible but may slightly diminish.
  • Touch-up sessions can be done as recommended by the doctor to maintain shape and moisture.

Before & After Lip Filler Results at V Square Clinic

Lip Filler Review_เอมี่ โดย หมอรวี
Lip Filler Review_ส้ม โดย หมอแอน
_ Lip Filler Review_สุภามาศ  ภูวิเศษ โดย หมอรรถ
Lip Filler Review_เกวลี จิวเจริญ โดย หมอรรถ
Lip Filler Review_สุภาภรณ์ ทำลา โดย หมอรรถ
Lip Filler Review_ณิชชาภัทร โดย หมอจ๋า

How Much Does Lip Filler Cost? Is It Expensive?

The price of lip filler varies depending on the brand and filler type, starting from 12,900 THB. The final cost also depends on the injection technique and the desired lip shape recommended by the doctor.

Interested in getting Lip Filler at V Square Clinic?

Click here to view the latest promotions.

Lip Filler Botox Promotion

Where to Get Lip Filler? Safe, Effective, and Worth the Price

Best place for lip filler injection

Before deciding where to get lip filler, it’s important to look beyond reviews and prices. You should always check the clinic’s credibility and safety standards, as not all clinics offer the same level of expertise. Choosing a non-certified clinic can lead to fake fillers, drug resistance, or unwanted side effects.

 6 Things to Check Before Choosing a Lip Filler Clinic

  1. Experienced doctor: The procedure must be performed by a qualified doctor specializing in facial contouring — not by staff or salespersons.
  2. Authentic filler only: The clinic must use genuine, Thai FDA–approved fillers with visible registration numbers, and open the box in front of you while showing the barcode to confirm authenticity before injection.
  3. Personalized technique: The injection method should be customized based on your facial structure and lip shape — not a one-style-fits-all or trendy approach — to ensure natural and balanced results.
  4. Licensed medical clinic: The clinic must be certified by the Ministry of Public Health, with sterile and high-standard equipment.
  5. Real customer reviews: Check verified feedback and Before–After photos on trusted platforms like Google Maps, Facebook, or Pantip for reliability.
  6. Post-treatment care: A trusted clinic should schedule follow-ups and allow direct consultation with the doctor in case of swelling, redness, or bruising.

In summary, choosing a lip filler clinic isn’t just about the price — you should consider the doctor’s expertise, filler authenticity, clinic standards, real reviews, and aftercare. When all six factors are met, you can feel confident that your treatment will be safe, effective, and worth every baht.

Lip Filler for Dry Lips at V Square Clinic — Naturally Beautiful Lips That Fit Your Face

Because lip filler injection isn’t just about “adding volume” —
it’s about “artfully designing the lips with the highest level of safety.”

Best Place for Lip Filler Injection

At V Square Clinic, lip filler injections aren’t just about adding volume — our doctors focus on personalized lip design, taking into account each person’s unique facial proportions and harmony.

The result? Naturally plump, hydrated lips that perfectly complement your features.

V Square Clinic’s Signature Lip Filler Technique:

  • Personalized assessment: Every case begins with an in-depth facial analysis and discussion of the patient’s desired outcome to ensure natural, balanced results — never overfilled.
  • Effective dry lip treatment: Using high-quality Hyaluronic Acid (HA) fillers with strong water-binding properties, helping restore moisture, smoothness, and volume to dry or chapped lips.
  • Authentic fillers, Thai FDA-approved: Every filler box is opened in front of the patient, with visible barcode stickers for verification — ensuring 100% product safety.
  • Gentle, precise injection technique: Experienced doctors perform all procedures with care to minimize bruising and swelling, resulting in natural-looking lips.
  • Comprehensive aftercare: Follow-up appointments are provided to review results and perform touch-ups if needed.
  • Proven results & real patient reviews: Verified feedback from real patients, Before–After photos, and video testimonials — including reviews from celebrities and influencers.
  • Free facial assessment: No consultation fee — all evaluations are done by experienced doctors to ensure confidence and the best possible outcome.
  • No sales pressure, no forced packages: All consultations are direct with doctors, without pushy sales tactics or forced treatments — your comfort and trust always come first.
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How to Prevent Dry Lips from Coming Back

Even after treatment, dry lips can come back if daily habits aren’t adjusted. Prevention is just as important as treatment — here are some simple ways to keep your lips soft and hydrated:

  • Drink enough water throughout the day.
  • Avoid licking, biting, or peeling your lips.
  • Reduce smoking and alcohol consumption, as they dehydrate the lips.
  • Limit coffee and strong tea — caffeine increases water loss.
  • Apply lip balm regularly, especially before sun exposure.
  • Avoid mouthwash that contains alcohol.
  • Eat fruits and vegetables rich in vitamins B, C, and omega-3 fatty acids to nourish your lips and mouth tissue.
  • Avoid overly spicy, salty, or acidic foods that can irritate your lips.

FAQ — Frequently Asked Questions About Dry Lips

What should I do if my lips feel dry at night?

Dry lips at night are often caused by mouth breathing, snoring, dry air, or underlying health issues like allergies or acid reflux. Try these tips:

  • Sip water before bed and after waking up.
  • Apply a moisturizing lip balm or ointment before bed.
  • Use a humidifier to add moisture to your bedroom air.
  • Treat snoring or nasal allergies to prevent mouth breathing.
  • If symptoms persist, consult a doctor to rule out other causes.

Why are my lips dry all the time?

Constantly dry lips may be caused by dehydration, long exposure to air conditioning, medication side effects, or chronic conditions such as diabetes and autoimmune diseases like Sjögren’s syndrome. If symptoms persist for over two weeks, see a doctor for evaluation.

How can I treat dry lips?

Drink enough water, apply a moisturizing lip balm, avoid licking your lips, and use a humidifier. If the problem persists, seek medical advice.

What products are best for dry lips?

Use lip balms or ointments with rich moisturizers such as Shea Butter, Ceramide, or Hyaluronic Acid, and choose formulas with SPF protection. If symptoms remain, consult a doctor.

Is morning dry mouth related to acid reflux?

Yes, acid reflux can cause throat irritation, dryness, and discomfort that affect the lips. It’s also common in people who snore or breathe through their mouth while sleeping.

How can elderly people treat dry lips?

Sip water frequently, use moisturizing lip balm, and have regular health check-ups since certain medications may cause dryness.

Does Vaseline really help with dry lips?

Yes — Vaseline (Petroleum Jelly) helps lock in moisture and protect the lips. For best results, use it alongside a lip balm that contains hydrating ingredients such as Shea Butter or Hyaluronic Acid.

Does dehydration really cause dry lips?

Absolutely. Not drinking enough water is one of the main causes of dry lips, as dehydration reduces moisture in both the skin and lips. Aim to drink 8–10 glasses of water a day and sip regularly to stay hydrated.


Summary — How to Keep Your Lips Soft and Healthy

Dry lips can be easily improved by drinking enough water, avoiding harmful habits, and applying lip balm or ointment regularly. However, if dryness becomes chronic or starts to affect your confidence, lip filler injections are a great option to instantly restore moisture and long-lasting hydration — especially when combined with proper daily lip care.


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