Synthomycin ointment for acne: when to use

Synthomycin ointment (often in the form of "synthomycin liniment") is a topical medication whose active ingredient is chloramphenicol (also known as chloramphenicol). It is a broad-spectrum antibiotic active against many gram-positive and gram-negative bacteria. Standard instructions indicate its use for purulent wounds, burns, trophic ulcers, furuncles, and other purulent-inflammatory skin diseases. [1]

The drug is available in various concentrations, typically around 5-10%, in a fatty or emulsion base, which creates an occlusive film and holds the antibiotic on the skin's surface. Synthomycin lines were initially developed for surgery and purulent dermatology, where it was necessary to locally suppress the growth of sensitive microbes in wounds and burns, accelerating cleansing and epithelialization. Acne was not initially included in the indications. [2]

Nevertheless, synthomycin ointment has long been used in everyday practice as a "folk remedy" for acne. The logic is clear: if the drug kills bacteria and dries up pustules, then it should also help with pustules on the face. On forums and in old popular publications, you can find recommendations to "apply synthomycin to pimples" for any inflammatory lesions. However, this approach does not align well with modern understanding of acne treatment and the rational use of antibiotics. [3]

Modern acne reviews emphasize that acne is more than just a bacterial skin infection. It is caused by a complex of factors: increased sebum production, changes in its composition, follicular hyperkeratosis, inflammation, and changes in the microbiota. Therefore, simply "killing the germs" is not enough: a comprehensive approach targeting several factors simultaneously is needed. The isolated use of antibiotics, especially older and unadapted forms, is considered an outdated tactic. [4]

A separate issue is the safety and resistance of bacteria. Chloramphenicol is known as an antibiotic with rare but potentially severe systemic side effects, including aplastic anemia. Although the primary risk is associated with systemic use, current literature continues to discuss the safety of topical formulations, as well as the problem of antibiotic resistance. This is another argument against the frivolous "cosmetic" use of synthomycin for acne. [5]

Table 1. Synthomycin ointment: what kind of drug is it?

Parameter	Description
Active ingredient	Chloramphenicol (chloramphenicol)
Initial readings	Purulent wounds, burns, trophic ulcers, furunculosis
Form	Liniment or ointment on a fatty or emulsion base
Type of action	Topical broad-spectrum antibiotic
Original purpose of use	Surgery and purulent dermatology, not acne treatment

How chloramphenicol works and what happens when it's applied to the skin

Chloramphenicol inhibits protein synthesis in bacterial cells by binding to ribosomes and blocking the growth of susceptible microorganisms. The drug is active against a range of gram-positive and gram-negative bacteria, including some strains of staphylococci and streptococci. The instructions for syntomycin liniment emphasize its activity against purulent-inflammatory skin lesions and wound healing. [6]

When applied topically to damaged skin, the ointment creates an antibiotic layer in the area of inflammation, reducing the bacterial load, helping to cleanse the wound of microbes, and stimulating the formation of granulation tissue. A fatty or emulsion base reduces moisture evaporation, mechanically protects the wound surface, and improves the distribution of the medication. This is beneficial for chronic ulcers and burns, but for daily skin care for mild acne, such occlusion is often unnecessarily harsh. [7]

In relation to acne, chloramphenicol potentially affects Propionibacterium acnes (Cutibacterium acnes) and staphylococci, which are involved in follicular inflammation. There is research into developing specialized gels and hydrogels containing chloramphenicol specifically for the treatment of acne, often as hospital or experimental drugs. Such formulas are created with the required concentration, permeability, and safety in mind, rather than the traditional ointment base. [8]

However, it's important to understand that antibiotics don't address the key mechanisms of comedone formation and hyperkeratosis. Antibiotics reduce the bacterial load and inflammatory response, but have little effect on sebum production and pore clogging. This is why current guidelines consider topical antibiotics only as part of combination therapy, paired with retinoids and benzoyl peroxide, rather than as a monotherapy. [9]

Additionally, it must be taken into account that repeated and prolonged use of topical antibiotics increases the risk of selection of resistant strains. Research shows that many bacteria can acquire resistance to chloramphenicol through plasmid-mediated mechanisms and enzymes, and this contributes to the overall problem of antibiotic resistance. Therefore, the uncontrolled application of syntomycin ointment "on every pimple" cannot be considered a safe strategy for either the individual or society as a whole. [10]

Table 2. Mechanism of action and limitations of chloramphenicol

Aspect	The essence
Main action	Suppression of protein synthesis in bacterial cells
Spectrum	Many gram-positive and gram-negative bacteria
Effect in the wound	Reduces bacterial load, accelerates healing
Role in acne	Reduction of bacterial inflammation, but no effect on sebum and comedones
Limitation	Risk of resistance and does not solve all acne mechanisms

What do current guidelines say about chloramphenicol for acne?

Major current acne treatment guidelines list the main classes of topical agents: benzoyl peroxide, retinoids, modern topical antibiotics (clindamycin, erythromycin), azelaic and salicylic acid, as well as newer molecules. These documents emphasize combination therapy, with benzoyl peroxide being mandatory in addition to antibiotics to reduce the risk of resistance. [11]

It is emphasized that not all topical antibiotics are suitable for acne treatment. Reviews explicitly note that due to their lower efficacy and adverse effects, drugs such as chloramphenicol and older-generation topical tetracyclines are rarely used for acne and are not included in standard treatment regimens. Clindamycin and erythromycin are preferred, often in combination with benzoyl peroxide. [12]

American and European guidelines also emphasize that topical antibiotics should not be used alone or for long periods of time without concomitant benzoyl peroxide and retinoids. This reduces the risk of resistance by Propionibacterium acnes and associated flora and increases the effectiveness of therapy. However, synthomycin ointment is not included in standard acne treatment regimens. [13]

Some studies examine chloramphenicol as a component of specially developed acne gels and hydrogels, often in hospital settings or research projects. These studies emphasize that due to its toxicity and the properties of the molecule, its use is limited and requires a well-designed dosage form. This is a far cry from the idea of "slathering your face with cheap synthomycin ointment from the pharmacy." [14]

Thus, the "synthomycin ointment for acne" approach is not based on modern clinical guidelines. If a physician does consider chloramphenicol for severe purulent skin lesions, it is for localized problems, hospital-based medications, and strictly limited courses, not for cosmetic use in adolescents or adults with common acne. [15]

Table 3. The place of chloramphenicol in acne therapy according to modern data

Paragraph	Modern position
Main local resources	Benzoyl peroxide, retinoids, clindamycin, erythromycin, azelaic acid
Chloramphenicol for acne	Rarely used, not a standard
Antibiotic monotherapy	Not recommended
Risk of resistance	High with long-term and single antibiotic therapy
The role of syntomycin ointment	Acne is hardly mentioned in modern treatment plans.

When is synthomycin ointment really appropriate and how can it be used for problem skin?

According to the instructions, syntomycin liniment is indicated for purulent-inflammatory skin diseases: boils, carbuncles, purulent wounds, trophic ulcers, and second- and third-degree burns. In these situations, the antibiotic is applied to limited areas of skin with already pronounced purulent lesions, usually under a bandage, and the doctor's task is to locally control the infection and accelerate healing. [16]

Sometimes, acne patients develop isolated, large purulent lesions, similar to boils. In this situation, a doctor may consider a topical broad-spectrum antibiotic, including synthomycin, as a temporary measure for a small area. However, this is a targeted treatment, not a recommendation to "apply it all over the face." It should be limited in duration and combined with basic acne therapy, not replace it. [17]

Some surgical and dermatological studies discuss the use of topical chloramphenicol on sutures and after minor procedures to reduce the risk of infection. However, the benefit is shown to be moderate, and the question of clinical significance and rationale remains controversial. This further emphasizes that chloramphenicol is a tool for specific clinical needs, not a universal "acne cream." [18]

If a doctor does prescribe synthomycin ointment for purulent skin lesions, it is usually recommended to apply it in a thin layer only to the affected areas, on clean, dry skin, avoiding prolonged and uncontrolled use. It is important not to combine the ointment with other topical antibiotics in the same area, not to use it under tight occlusive dressings unless indicated, and not to apply it to large areas, especially in children. [19]

Therefore, it's more logical to consider synthomycin ointment as a specialized treatment for localized purulent processes, prescribed by a doctor, rather than as part of a daily treatment for teenage acne. For acne specifically, it's far more appropriate to use modern regimens with benzoyl peroxide, retinoids, and azelaic acid, while choosing topical antibiotics from the recommended clindamycin and erythromycin categories. [20]

Table 4. When synthomycin ointment is appropriate and when it is not

Situation	Rational decision
Purulent wounds, burns, trophic ulcers	Synthomycin as prescribed by a doctor
Furuncle, carbuncle	Synthomycin may be used locally as part of the regimen.
Mild to moderate acne on the face	Focus on retinoids, benzoyl peroxide, and azelaic acid
The desire to "smear pimples with ointment from the pharmacy"	Synthomycin is not considered a first-line drug
Long-term independent use on the face	It is irrational, increases risks and does not solve the cause of acne

Risks and side effects of chloramphenicol and syntomycin ointment

Chloramphenicol has historically been associated with severe hematological complications, including aplastic anemia, thrombocytopenia, and leukopenia. The primary risk is associated with systemic administration, but there is ongoing debate in the literature about a link between even topical forms and rare cases of aplastic anemia. Most reviews conclude that, if a link does exist, the absolute risk is extremely low, but it cannot be completely ignored. [21]

Local side effects are much more common with topical use: burning, redness, itching, dryness, and contact dermatitis. The oily or thick base of synthomycin ointment can cause a feeling of clogged pores, increase discomfort in people with oily and combination skin, interfere with the application of cosmetics, and decrease adherence to therapy. There are reports of allergic reactions to chloramphenicol, including severe ones, although these are rare. [22]

The development of resistance remains a major problem. Research shows that bacteria, including staphylococci and Pseudomonas aeruginosa, are capable of developing multiple resistance mechanisms to chloramphenicol, often plasmid-mediated. Given the rise in global antibiotic resistance, it is inappropriate to use topical antibiotics as cosmetic treatments for mild acne, especially when safer and more well-studied alternatives exist. [23]

Pregnant and lactating women require special attention. Reviews of chloramphenicol use during breastfeeding emphasize that the data are conflicting, and despite the extremely low systemic absorption with topical application, the theoretical risk of hematological toxicity in the child cannot be completely ruled out. Therefore, many sources recommend caution with topical forms of chloramphenicol during pregnancy and lactation and, if possible, choosing alternatives. [24]

Finally, it's important to remember that prolonged application of antimicrobials to large areas of skin disrupts the normal microbiota. This also applies to chloramphenicol: the constant suppression of sensitive microbes on the skin can shift the balance toward resistant strains and contribute to the development of other problems, including opportunistic infections and alterations in the skin barrier. These risks are also taken into account in modern concepts of rational antibiotic use. [25]

Table 5. Main risks of syntomycin ointment when used for acne

Risk	What is the point?
Hematological toxicity	The theoretical risk of aplastic anemia with topical application is extremely low, but is debated
Local irritation and allergy	Burning, redness, contact dermatitis
Antibiotic resistance	Selection of resistant strains, contribution to the overall problem
Adverse effects on microbiota	Disruption of the normal skin flora balance
Restrictions during pregnancy and lactation	Safer alternatives are preferred

What to replace synthomycin ointment with for acne: a modern algorithm

For mild acne with isolated inflammatory lesions and comedones, a modern basic regimen includes gentle cleansing, a topical retinoid, benzoyl peroxide, and, if needed, azelaic or salicylic acid. Retinoids normalize keratinization and reduce the formation of microcomedones, benzoyl peroxide has a pronounced antimicrobial effect without the risk of resistance, and acids gently exfoliate and reduce inflammation. [26]

Topical antibiotics in modern acne regimens primarily include clindamycin and erythromycin in gel and solution form. They are used only in combination with benzoyl peroxide to reduce the risk of resistance. The course of treatment is usually limited to a few months, after which the emphasis shifts to maintenance treatment with retinoids and other non-microbial agents. [27]

For more severe forms of acne (multiple inflammatory nodules, risk of scarring), systemic antibiotics of the latest generation (doxycycline, lymecycline) and systemic isotretinoin are considered. European and international guidelines emphasize that systemic antibiotics should be used for a limited period and always in combination with topical non-microbial agents to minimize resistance. Chloramphenicol is not listed among systemic medications for acne. [28]

For patients who habitually reach for "antibiotic ointment" for every pimple, it's helpful to rethink their strategy. In most cases, a well-structured skincare regimen with a retinoid, benzoyl peroxide, and proper moisturizing is far more beneficial than spot-on application of a strong, oil-based antibiotic. If inflammation is severe and basic skincare isn't effective, it's best to discuss your treatment plan with a dermatologist rather than changing products on your own. [29]

Thus, the modern algorithm looks like this: for acne, use modern first-line agents with proven efficacy and a clear safety profile; for purulent-inflammatory wounds and ulcers, use synthomycin ointment and similar medications according to strict indications. Mixing these two logics and turning a wound antibiotic into an everyday "acne cream" is no longer consistent with the state of modern dermatology and the principles of rational antibiotic use. [30]

Table 6. What can replace syntomycin ointment for acne?

Task	Modern choice
Reduce comedones	Topical retinoids
Reduce bacterial inflammation	Benzoyl peroxide, combination with clindamycin or erythromycin
Even out skin tone and post-acne	Azelaic acid, soft acids
Fat control	Gels with salicylic acid, niacinamide
Severe acne with risk of scarring	Systemic antibiotics of the latest generations, isotretinoin according to indications

A short Q&A session

Can synthomycin ointment be used for acne on the face as a primary skincare routine?
According to current recommendations, this is irrational. Synthomycin was developed for purulent wounds and ulcers, not for acne treatment. It doesn't address the underlying mechanisms of acne, increases the risk of bacterial resistance, and puts unnecessary strain on the skin due to its oily base. Modern regimens with retinoids, benzoyl peroxide, and azelaic acid are preferable for acne. [31]

Is synthomycin ointment safe during pregnancy and breastfeeding?
Data on topical chloramphenicol are conflicting. The systemic drug is associated with rare but severe hematological complications, while topical forms pose only theoretical risks. The safety profile during pregnancy and lactation is considered less favorable than that of azelaic acid and some other agents, so many sources advise using chloramphenicol with caution and only as directed, not as a cosmetic acne treatment. [32]

If an ointment once helped a severely inflamed pimple, can it be used regularly?
A one-time improvement doesn't mean the medication is suitable for regular use. Any topical antibiotic, with prolonged and frequent use, increases the risk of bacterial resistance and can disrupt the balance of the skin's microbiota. For acne, it's better to build a long-term strategy based on agents that address all mechanisms of the disease, not just the bacterial component. [33]

Are there situations where synthomycin ointment is actually beneficial for someone with acne?
Yes, but only indirectly. If a person has trophic ulcers, burns, boils, or chronic purulent wounds, synthomycin ointment, when prescribed by a doctor, may be useful specifically for these areas. Acne is treated separately, according to modern treatment plans. In other words, the ointment doesn't help with acne, but with any accompanying purulent problems that may be present. [34]

What should a reader do if they're currently using synthomycin ointment for acne?
A reasonable course of action is to avoid increasing the area or frequency of application, discuss the situation with a dermatologist, and work with them to develop a modern acne treatment plan. The doctor will help assess the severity, select a retinoid, benzoyl peroxide, and, if necessary, a topical or systemic antibiotic from the recommended list, and also determine whether chloramphenicol is even indicated in a particular clinical situation. [35]