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Low Level Laser Therapy

Low level laser light therapy (LLLT)

What is the Low-Level Laser Light therapy (LLLT)

Why Low-level laser light:- This treatment is referred to as ‘low-level’ because the energy or power densities delivered are low compared to other forms of laser therapy such as ablation, cutting, and thermally coagulating tissue.

Indications:- Skin & Hair

Skin:-  [415nm and 633 nm ]Skin rejuvenation, wrinkles, Acne, Healing of skin, in pigmentary disorders like vitiligo, inflammatory diseases like psoriasis, Acne.

Hair : [633nm ] hair regrowth, hair strengthening.

LLLT for Skin Rejuvenation[633nm]

Skin starts showing its first signs of aging in the late 20s to early 30s and it usually presents with wrinkles, dyspigmentation, telangiectasia, and loss of elasticity. This happens because of reduction in the amount of collagen, fragmentation of collagen fibers,  degeneration of elastic fibers.

The red light [ 633 nm], is a  non-ablative skin rejuvenation which helps to improve photoaged and aging skin without destroying the epidermis. This red light penetrates deeper into the skin & promotes cell growth, improves cell viability, reduces the size of the pore, stimulate cells to produce more collagen beneath the skin. This helps in skin rejuvenation.

LLLT for Acne vulgaris :  [415nm ]

Formation of acne involves :

  • Follicular hyperconification,
  • Increased sebum secretion affected by the androgenic hormone secretions,
  • Colonization of Propionibacterium acne and inflammation.

The need for Low-level light therapy in Acne :

Current treatments for acne vulgaris include topical and oral medications such as

  • Topical antibiotics,
  • Topical retinoids,
  • Benzoyl peroxide,
  • Alpha hydroxy acids,
  • Salicylic acid, or azelaic acid.
  • In severe cases, systemic antibiotics such as tetracycline and doxycycline, oral retinoids, and some hormones are indicated.
  • Medications work by counteracting micro comedone formation, sebum production, P. acnes, and inflammation.
  • Some patient needs combination treatment to get good control on active acne lesions. For these patients along with the oral & topical medications, LLT gives faster control on acne lesions.
  • [Reference: Exposure to sunlight was reported to be highly effective for treatment of acne with efficacy up to 70%. The sunlight decreases the androgenic hormones in the sebaceous gland, but the unwanted effect of exposure to UVA and UVB limits sunlight for the treatment of acne. ]

How Low-level Laser light helps in controlling acne?

  • Blue light [417nm ]

When LLlT light is used in controlling active acne lesions, mainly blue light, the acne forming bacteria releases a chemical called as porphyrins, this photochemical reaction forms the free radicals which destroy the acne forming bacteria.

  • Red light : [633nm]

Penetrate deeper in tissues as compared to blue light. Red light can affect the sebum secretion of sebaceous glands and change keratinocyte behavior. Red light acts on the cytokines in cells & thus helps in reducing inflammation.

Advantages:-

  • Non-invasive, office hour procedure.
  • Painless treatment without any downtime.
  • Safe during pregnancy.
  • Can be combined with other procedures like chemical peels, laser treatments to get best possible results.
  • Helpful in patients who don’t tolerate or take isotretinoin.
  • Can be given immediately after ablative laser resurfacing to allow faster healing of the skin.

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