The Effect of Human Peptide GHK Relevant to
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New Data of the Cosmeceutical and TriPeptide GHK
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GHK Peptide as a Natural Modulator of
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GHK, the Human Skin Remodeling Peptide Induces Anti-Cancer
Expression and DNA Repair Analytical Oncology (2014)
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Avoid Buying Fake Copper Peptides Dangerous







Skin Types and Sun ExposureWoman undressing her gown

Children in general are very sensitive to sunlight and have very thin skin that burns quickly but tans slowly. They should not be exposed to sunlight for more than 5-10 minutes. Infants (under 1 year) should not be exposed to intense sunlight at all.

Persons with very light skin, reddish hair and lots of freckles are most sensitive to sunlight. They may burn very quickly and tan very slowly. People with this type of complexion should avoid unprotected exposure to intense sunlight of longer than 20 minutes.

Light skin, in persons who are blond or strawberry blonde and often freckled also burns quickly and tans slowly. People with this complexion should avoid unprotected exposure to intense sunlight of longer than 20 to 30 minutes. Darker skin tones are more protective against sunlight but remember that even the darkest complexion doesn't make you immune to sunburn.

Protective clothing and a wide brimmed hat can protect when you are outside. Remember that UV rays are present even on cloudy days. Sunlight is strongly reflected from sand, snow, ice, and concrete and can increase your direct sunlight exposure up to 50%.

Wear sunglasses that filter out ultraviolet light to protect your eyes.

Be especially careful about sun exposure if you take medications like tetracycline, antihistamines, "sulfa" drugs, diuretics and some oral contraceptives. The combination of some drugs and sunlight can decrease the time needed to produce sunburn. (See below, Special Sunlight Sensitivities)

Types of Ultraviolet Radiation (UV)

Suntans are produced by two types of ultraviolet radiation in sunlight.

UVA rays constitute 90-95% of the sun's ultraviolet light reaching the earth and have a relatively long wavelength (320-400 nm) directly adjoining the violet end of the visible light spectrum. UVA light penetrates the furthest into the skin and is the primary inducer of tanning response in humans

UVB rays are partially absorbed by the ozone layer and have a medium wavelength (290-320 nm). They do not penetrate the skin as far as the UVA rays do but contain more energy and activate the synthesis of vitamin D and the absorption of calcium and other minerals. UVB rays are the primary cause of sunburn and of the most concern for skin and eye damage.

Special Sunlight Sensitivitieswoman sunbathing

A number of drugs, photosensitizers and disease conditions increase your sensitivity to ultraviolet light. Suntanning should be avoided or used with special caution if you are in one of these categories.

Drugs include:

  1. Tetracyclines ( Declomycin Vibramycin)
  2. Thiazide Diuretics (Diuril, Hydrodiuril, Hygroton, Dyazide)
  3. Hypoglycemic agents (Antidiabetics)
  4. Sulfonamides
  5. Phenothiazines (Phenergan, Thorazine, Stelazine, Compazine )
  6. Nalidixic Acid
  7. Quinidine and Quinine
  8. Lomotil
  9. Griseofulvin
  10. Psoralens

Topical photosensitizers include:

  1. Oil of Bergamot (perfumes, cologne)
  2. Some deodorant soaps
  3. Plants occasionally (figs, limes, celery, parsnips)

Photosensitivity Diseases include:

  1. Herpes Simplex
  2. Porphyrias (Erythropoietic Proto-porphyria, Porphyria)
  3. Discoid and Systemic Lupus Erythematosus
  4. Polymorphous Light Eruption
  5. Xeroderma Pigrnentosa
  6. Solar Urticaria
  7. Dermatomyositis
  8. Actinic Reticuloid

Questions or Advice?

Email Dr. Loren Pickart at drlorenpickart@gmail.com

Alternate Email: ghkcopperpeptides@gmail.com

Call us at 1-800-405-1912 Monday Through Friday (8 am to 6 pm) PST