What Do Blue and Red Led Lights Actually Do for Acne?

Dr Sam Robson
By Dr Sam Robson

Dr Sam Robson is a highly respected and experienced practitioner who qualified as a GP in 1997 and has been practising aesthetic medicine since 2004.


Our skin should provide an effective barrier against the environment – in healthy skin, there are pores that have an oil-producing gland within them. This oil/ sebum passes freely onto the skin surface keeping it supple and soft.

Naturally, our skin and body co-exist with bacteria and, in health, these are kept in balance posing no threat to our complexion or well-being.

Acne starts with a blocked pore. 

The oil becomes trapped and builds up behind the blockage. This oil, rich in nutrients, provides a perfect environment for bacteria to multiply - the healthy balance is lost and as the bacteria increase in number, they overwhelm the skin’s defenses, causing inflammation.

This inflammation is experienced as pain and redness. 

Acne starts with a blocked pore.

Light therapy can be effective because it addresses many of these issues at a cellular level. Despite the blocked pore, light energy can penetrate the skin and exerts various effects depending on its wavelength.

Blue light (415nm) kills bacteria by interfering with the metabolism within the organism, causing it to self-destruct. Because there is no possibility of the bacteria becoming resistant to this process, blue light is more effective than antibiotics which can very quickly lose their effectiveness.

Red light (633nm) inhibits the pore-blocking processes, reduces inflammation, as well as lowering excess oil/ sebum production.
It increases the supply of oxygen to the skin as well as improves circulation. Red light also increases the production of collagen and elastin.
These processes serve to repair damaged tissue and thus improve the skin’s texture as well as enhance wound healing. Red light can also help to destroy bacteria.

Does red and blue LED treat acne

Patients with acne typically have sensitive and inflamed skin as a result of the acne-causing processes.

Many topical products can often be harsh and further aggravate damaged skin.

Using chemical-free, non-topical treatment such as red/blue light therapy has proved to be an effective treatment option since it addresses the underlying disease-causing process whilst promoting and supporting healthy skin.

If you want to read more, the experts at Consulting Room really know what they're talking about and have put together complexion improvement, Light therapy, skin texture, and acne FAQs just for you. 

If you have more questions, you can use the complexion improvement, Light therapy, skin texture and acne questions feature to talk to our panel of trained medical experts. 

If you're keen to get started with any of these treatments right away then you're in luck - those clever folks also have a list of trusted, accredited complexion improvement, Light therapy, skin texture, and acne clinics in your area.

Many thanks to the author of this blog Dr Sam Robson who owns Temple Clinic.

Dr Sam Robson is a highly respected and experienced practitioner who qualified as a GP in 1997 and has been practising aesthetic medicine since 2004.

She has also become progressively aware of the increasing incidence of low morale and self-esteem 

The repertoire of treatments provided by the clinic aims to help address many problems.

Call Dr Sam Robson on 0122 486 9997 or visit www.templeclinic.co.uk.

Thanks to the author

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