This is one of the most frequently asked questions. Acne, pigmentation, enlarged pores, redness, or signs of ageing — which concerns are best addressed by a cosmetologist, and when is a visit to a dermatologist necessary? Although both professions relate to the health and appearance of the skin, their competencies are different. Importantly, they do not compete with each other. In practice, they very often complement one another.
Who is a dermatologist?
A dermatologist is a medical doctor who diagnoses and treats diseases of the skin, hair, and nails. They can identify skin conditions, order laboratory tests, perform dermatoscopic examination of moles, prescribe medications, and carry out pharmacological treatment.
It is worth seeing a dermatologist for, among other things, sudden new skin changes, severe acne requiring medical treatment, suspected skin conditions such as psoriasis, atopic dermatitis, or fungal infections, rapidly changing moles, chronic itching or rashes, and hair loss with no clear cause.
Who is a cosmetologist?
A cosmetologist assesses the condition of the skin and selects appropriate care and treatment protocols. Their role is to improve skin function, support its regeneration, and prevent the ageing process. They conduct cosmetological consultations and diagnoses, create personalised home care routines, plan treatment programmes, perform cosmetological procedures, and monitor results while adjusting the Beauty Plan. A cosmetologist does not treat skin diseases or prescribe medications.
What concerns are best addressed by a cosmetologist?
A cosmetologist can help with dehydrated skin, a damaged hydrolipid barrier, pigmentation, enlarged pores, oily and combination skin, early signs of ageing, loss of firmness, post-acne scarring, care for sensitive skin, and selecting the right cosmetics. In many cases, a well-planned cosmetological therapy can significantly improve skin condition without the need for pharmacological treatment.
When is collaboration between a cosmetologist and a dermatologist needed?
The best results are often achieved when both professions work together. Acne is a good example. A dermatologist can implement pharmacological treatment to calm the inflammatory process. A cosmetologist, in turn, helps rebuild the hydrolipid barrier, select appropriate skincare, reduce irritation, address post-inflammatory pigmentation, and improve skin texture after treatment has ended.
A similar situation arises with hirsutism. A cosmetologist can effectively reduce hair growth with laser hair removal, but if the clinical picture suggests hormonal imbalance, it is worth consulting an endocrinologist or dermatologist in parallel.
From personal experience
During my studies, I spent three years attending dermatology classes on a hospital ward — and that experience has significantly shaped my practice as a cosmetologist. Throughout my work, I have on many occasions noticed skin changes that went beyond the scope of cosmetology. There have been situations during consultations where I identified symptoms that could indicate specific conditions, and referred clients to the appropriate specialists. I also regularly recommend having basic blood tests done — a full blood count, hormone levels, iron, and vitamin D — and consulting an endocrinologist or GP with the results. Skin very often reflects what is happening inside the body, and no treatment can replace a medical diagnosis where one is needed.
Can a cosmetologist refuse to perform a treatment?
Yes — and this is a sign of responsibility. If during a consultation a cosmetologist notices a change requiring medical diagnosis or suspects a skin disease, they should refer the client to a dermatologist. The same applies in cases of active infections, certain skin lesions, or contraindications to treatment. Safety should always take precedence over performing a procedure.
Who is best placed to choose a skincare routine?
This is another question that comes up very often. A dermatologist focuses primarily on treating the condition. A cosmetologist, on the other hand, analyses the daily skincare routine, lifestyle, and the skin's needs, then selects cosmetics and treatments that support its proper functioning. Both roles are equally important, but they serve different purposes.
A dermatologist diagnoses and treats skin diseases. A cosmetologist takes care of skin condition, regeneration, and prevention — selecting appropriate care and conducting treatment therapies. The best results are very often achieved when the competencies of both specialists complement each other. So rather than asking who is "better," it is worth asking a different question — what does my skin need right now? That is precisely where informed skincare should begin.
Katarzyna Gwizdal, MSc, cosmetologist, Skin Laser