Common concerns — severity, when to see a doctor, how we treat them
Each page answers one skin, nose or eye concern directly: severity levels, warning signs, and how BonBoz treats it. Medically reviewed by specialist doctors.
Acne Treatment
Sensitive, Red, and Stinging Skin: A Damaged Skin Barrier Following Improper Treatment and the Recovery Protocol
Sensitive skin occurs when the skin barrier is compromised, presenting symptoms such as redness, a burning sensation, stinging upon product application, mild flaking, and frequent breakouts. Common causes today include the overuse of active ingredients, undergoing chemical peels or laser treatments too frequently, or using counterfeit creams containing corticosteroids.
Persistently Oily and Shiny Skin: Why Frequent Cleansing Still Leaves It Oily, How to Control Sebum and Reduce Clogged Pores
Excessive sebum production leaves the face shiny after just a few hours, causing makeup to slip, pores to become more visible, and skin to be prone to closed comedones. Washing your face frequently and using drying products only stimulates the sebaceous glands to produce even more oil.
Adult Acne After 25: Why Breakouts Persist, How It Differs from Teenage Acne, and Treatment Options
Post-25 adult acne typically appears on the chin, jawline, and neck, presenting fewer blackheads and more deep inflammatory lesions that often flare up with hormonal cycles and stress. At this stage, the skin becomes thinner and more prone to dryness, making it unsuitable for the aggressive treatment regimens used for teenage acne.
Back and Chest Acne: Why It Is Harder to Treat Than Facial Acne, When to See a Doctor, and How to Treat It
Acne on the back and chest develops on thicker skin with a high concentration of sebaceous glands, constantly exposed to sweat and friction from clothing. These breakouts easily turn into deep inflammatory lesions, leaving dark spots and scars that persist longer than facial acne, while showing limited response to standard topical treatments.
Keloids vs. Hypertrophic Scars: Key Differences from Atrophic Scars, Treatment Options, and Recurrence Prevention
Keloids are raised, extend beyond the original wound, and are often itchy, red, and prone to recurrence with simple surgical excision. Their treatment differs entirely from that of atrophic scars, involving intralesional injections, vascular lasers, and compression therapy — requiring months of patience and close monitoring for recurrence.
Corticosteroid-Induced Acne (from Unregulated Creams and Herbal Tinctures): Signs and Skin Recovery
Unregulated homemade bleaching creams and herbal alcohol solutions often contain corticosteroids. While they may improve skin appearance for a few weeks, stopping their use leads to skin thinning, erythema, and severe rebound breakouts. Recovery requires a proper tapering process under a doctor's supervision—do not discontinue use abruptly on your own.
Blackheads on the Nose and Cheeks: Should You Pop Them, and How to Treat Them to Prevent Recurrence
Blackheads are oxidized sebum plugs at open follicular openings, not trapped dirt. Pore strips and manual extraction provide immediate results but enlarge pores and lead to recurrence — proper follicular clearance is essential.
Inflammatory Acne, Nodules, and Cysts: Understanding the Severity and Why You Shouldn't Pop Them at Home
Inflammatory acne is red, swollen, and painful; nodular acne is larger and deeper; cystic acne presents as large, deep inflammatory pockets beneath the skin that can easily lead to atrophic scars. These three severity levels require distinct treatment protocols, and they all share one critical rule: do not attempt to pop or squeeze them yourself.
Subclinical Acne (Closed Comedones): Why Your Skin Feels Bumpy Without Coming to a Head, and How to Treat It Properly
Closed comedones are sebum plugs trapped deep within the follicles—rough to the touch, visible as tiny bumps under angled light, with no swelling or protruding head. Squeezing is ineffective, and picking only causes inflammation—proper pore clearance and patience are essential.
Hormonal Acne: Identification, Severity Levels, and Medical Treatment Protocols
Hormonal acne typically develops along the jawline and chin, flaring up with menstrual cycles or stress due to internal hormonal fluctuations. Surface-level skincare cannot address the root cause—it requires a dermatologist-designed treatment plan and time.
Enlarged Pores: Causes, How to Distinguish from Atrophic Scars, and Effective Treatments
Enlarged pores are commonly caused by oily skin, aging, and sun damage that reduces elasticity around the hair follicles. While no product can shrink them permanently, their appearance can be significantly minimized by addressing the root causes.
Post-Inflammatory Hyperpigmentation (PIH): How It Differs from Atrophic Acne Scars and How Long It Takes to Fade
Post-acne dark spots are flat areas of hyperpigmentation caused by post-inflammatory hyperpigmentation, distinctly different from atrophic acne scars, which are indented depressions in the skin. These dark spots can gradually fade with proper sun protection and by avoiding picking or squeezing; however, if they persist for several months without improvement, you should consult a doctor.
Rolling Scars: Wavy Skin Caused by Fibrous Bands and How to Treat Them
Rolling scars create a wavy, uneven skin texture with sloping edges, caused by subcutaneous fibrous bands tethering the base of the scar downward. Because the root cause lies beneath the skin, subcision is typically a crucial step before performing surface resurfacing.
Boxcar Acne Scars: Identification, Severity Levels, and Treatment Methods
Boxcar scars are depressed areas with well-defined, steep edges and a relatively flat base, making them wider than ice pick scars. This type of scar responds relatively well to skin resurfacing techniques when accurately classified as superficial or deep.
Ice Pick Scars: Why They Are Difficult to Treat and How BonBoz Approaches Them
Ice pick scars are small, narrow, yet deep indentations that resemble needle punctures—the most challenging type of atrophic scar because superficial treatments cannot reach the base of the scar.
Aesthetic Medicine
Dry Skin vs. Dehydrated Skin vs. Moisture-Deficient Skin: Key Differences, Why Moisturizers Fall Short, and When You Need Skin Boosters
Dry skin lacks oil; dehydrated skin lacks water—two distinct conditions that share similar signs: tightness, flakiness, and visible fine lines. Oily skin can still be dehydrated, and improper care can leave your skin looking greasy yet feeling dry underneath.
Thin lips, dry and wrinkled lips, undefined lip borders: how to shape with lip fillers for a natural look and avoid the "duck lip" effect
Thin lips can be anatomical or caused by age-related volume loss, marked by an undefined lip border, vertical lip lines, and downturned lip corners. Proper lip enhancement focuses on restoring structure and hydration, not simply making the lips bigger.
Receding, Short, and Retracted Chins: Their Impact on the Facial Profile and How Dermal Fillers Reshape the Chin
A receding chin (retrogenia) is set back relative to the vertical line from the lips, whereas a short chin lacks vertical height, making the face appear round and shortened. Both conditions weaken the facial profile, blur the jaw-neck definition, and are sometimes accompanied by a protruding lower lip.
Deep smile lines, sunken cheeks, and a gaunt face: age-related volume loss and restoration with dermal fillers or autologous fat grafting
Deep smile lines (nasolabial folds) and sunken cheeks often go hand in hand: midfacial fat pads atrophy and descend with age, leaving hollowed cheeks and shadowed folds. The proper area to restore volume is the cheeks, not directly into the folds.
Horizontal forehead lines and frown lines ("11" lines): Dynamic or static wrinkles, and can Botox eliminate them?
Horizontal forehead lines result from the repeated contraction of the frontalis muscle when raising the eyebrows, while vertical frown lines between the brows (glabellar lines) are caused by the corrugator muscles contracting during concentration or frustration. Both start as dynamic wrinkles and eventually become etched as static lines over time.
Uneven skin tone, dullness, and hyperpigmentation: Distinguishing between pigmentary changes, dead skin cells, or poor circulation, and how to brighten and even out your complexion
Dull, uneven skin occurs when the surface lacks radiance and exhibits scattered dark spots and hyperpigmented areas. The causes include dead skin cell buildup, sun-induced diffuse hyperpigmentation, dehydration, and poor circulation—each requiring a targeted approach.
Crow's feet and under-eye wrinkles: dynamic vs. static lines, Botox vs. skin boosters
Crow's feet are wrinkles that radiate from the outer corners of the eyes when smiling, caused by the repeated contraction of the orbicularis oculi muscle. Initially, they only appear with facial movement (dynamic wrinkles), but over time, they become visible even when the face is at rest (static wrinkles). These two stages require different treatment approaches.
Freckles and Brown Spots (Age Spots): Distinguishing Them from Melasma and Treatment Options
Freckles are small spots that typically appear in childhood and darken with sun exposure, whereas age spots develop in middle age due to aging. Both respond significantly better to laser treatments than melasma, but accurate identification is essential to avoid using incorrect treatment parameters.
Melasma: The Difference Between Epidermal and Dermal Melasma and Why Treatment Requires Patience
Melasma presents as symmetrical dark patches on the cheeks, forehead, and upper lip, triggered by sun exposure, hormonal changes, and genetic predisposition. There is no one-time "cure" for melasma; effective management requires strict sun protection, prescription topical treatments, and clinical procedures tailored to the specific type of melasma.
Rhinoplasty
Redness, Shininess, and Visible Implant After Rhinoplasty: Signs of Skin Thinning and When to Seek Early Intervention
A shiny, red nasal tip or bridge with visible implant contours beneath the skin after rhinoplasty is a sign of progressive skin thinning caused by implant pressure. This is not a condition that will "resolve on its own"—the longer it is left untreated, the harder it is to preserve the skin.
Wide, Flared Alar Lobules and Large Nostrils: When to Choose Alar Base Reduction vs. When Rhinoplasty Alone Is Enough
A flared or wide alar base occurs when the nasal wings extend beyond the intercanthal distance, often accompanied by enlarged nostrils or thick alar lobules. Alar base reduction is not always necessary—nasal tip projection alone can sometimes sufficiently narrow the appearance of the nostrils.
Short, Upturned Nose and Visible Nostrils: Structural Causes and Nasal Tip Lengthening Methods
A short, upturned nose occurs when the nasal tip is excessively rotated upward, making the nostrils visibly prominent from a frontal view and creating an overly wide nasolabial angle. This is commonly caused by a naturally short columella and nasal septum, or by capsular contracture from a previous surgery.
Dorsal Hump (Hump Nose): Why It Is Prominent in Profile View, When Correction Is Needed, and Treatment Options
A dorsal hump is a bony-cartilaginous protrusion along the nasal bridge that rises above the straight line connecting the radix to the nasal tip, most noticeable from the profile view. This is a structural feature that does not resolve on its own with age.
Flat Bridge, Bulbous Tip, Wide Alar Base: The Right Technique for Every Nose Shape
Vietnamese nasal anatomy typically features a low bridge, a bulbous tip, wide alar base, and thick skin. Each characteristic requires a specific technique—bridge augmentation alone will not refine the tip, and alar base reduction is a separate procedure.
Crooked Nose After Rhinoplasty: Swelling vs. True Deviation, and When to Seek Immediate Follow-Up
During the first few weeks after rhinoplasty, the nose may appear asymmetrical due to uneven swelling—this usually resolves on its own. True deviation caused by implant displacement, cartilage warping, or improper splinting requires an early evaluation by a surgeon and can sometimes be corrected non-surgically.
Revision Rhinoplasty for Failed Nose Jobs: Warning Signs, Ideal Timing, and Essential Facts to Know Before Deciding
A deviated nose, redness, visible implant contour, capsular contracture, or breathing difficulties after a rhinoplasty are common reasons for revision. Revision surgery is inherently more complex than the primary procedure due to preexisting scar tissue—requiring sufficient healing time, the right surgeon, and realistic expectations.
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Monolids vs. Hooded/Hidden Eyelids: What's the Difference, and Who is Suitable for Non-Surgical Double Eyelid Suturing vs. Incisional Blepharoplasty?
Monolids have no upper eyelid crease, while hidden eyelids (hooded eyelids) have a crease that is covered by skin when the eyes are open. Both are completely normal structural features—intervention is only needed if you desire a more defined eyelid crease or if excess skin makes your eyes look heavy.
Age-Related Upper Eyelid Laxity: Should You Get Blepharoplasty and How to Distinguish It from Ptosis and Brow Ptosis
After 40, the upper eyelid skin loses its elasticity, creasing and hooding over the natural eyelid fold, which makes the eyes look heavy and tired. Upper blepharoplasty to remove excess skin is often considered—yet it must be clearly distinguished from ptosis and brow ptosis, as each condition requires a different surgical approach.
Ptosis: How It Differs from Cosmetic Blepharoplasty and When Treatment Is Needed
Ptosis occurs when the upper eyelid margin droops, covering the pupil due to a weakened levator muscle—this is a functional issue, not a matter of the eyelid crease. Conventional double eyelid surgery cannot resolve this condition; a prior assessment of the levator muscle is required.
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Hollow Eyes, Sunken Eye Sockets, and Deep Tear Troughs: Why the Eyes Look Tired and How Fat Repositioning Differs from Dermal Fillers
Hollow eye sockets and deep tear troughs are caused by periorbital volume loss—leading to sunken upper eyelids and under-eye shadows despite adequate sleep. This condition stems from the atrophy or descent of periorbital fat due to aging, or natural facial anatomy.
Eye Bags vs. Dark Circles: Different Causes, Different Treatments
Eye bags are caused by protruding orbital fat or sagging lower eyelid skin, while dark circles refer to darkened skin caused by pigmentation, vascular congestion, or structural shadowing. Though appearing in the same area, their underlying causes are entirely different, meaning their treatments—ranging from skincare to surgery—are distinct as well.