Method of treating skin requiring skin cancer treatment

1. A method comprising:

preconditioning an area of skin of a subject by sequential topical application of a preparatory composition and a corrective composition to the area of skin; and

performing a radiation or photodynamic therapy skin cancer treatment on the preconditioned area of skin whereby preconditioning the skin reduces side effects associated with the skin cancer treatment compared to skin that is not preconditioned for receiving a skin cancer treatment.

2. A method as in claim 1 further comprising applying a protective composition after application of the corrective composition.

3. A method as in claim 1 further comprising waiting a predetermined period of time and repeating the preconditioning.

4. A method comprising:

post-treating an area of skin of a subject that has previously been treated with a radiation or photodynamic therapy skin cancer treatment by sequential topical application of a preparatory composition and a corrective composition to the area of skin whereby post-treating the skin reduces side effects associated with the skin cancer treatment compared to skin that is not post-treated after receiving a skin cancer treatment.

5. A method as in claim 4 further comprising applying a protective composition after application of the corrective composition.

6. A method as in claim 4 further comprising waiting a predetermined period of time and repeating the post-treating.

7. A method comprising:

preconditioning an area of skin of the subject by administering to the area of skin a first treatment and, after a predetermined period of time, a second treatment,

the first treatment comprising the sequential topical application of one or more preparatory compositions, a first corrective composition, and one or more protective compositions;

the second treatment comprising the sequential topical application of one or more preparatory compositions, and a second corrective composition,

wherein the second corrective composition comprises a first active ingredient sensitive to oxidation and a retinoid; and

treating the skin with a radiation or photodynamic therapy skin cancer treatment whereby preconditioning the skin reduces side effects associated with the skin cancer treatment compared to skin that is not preconditioned for receiving a skin cancer treatment.

8. The method of claim 7 wherein the one or more preparatory compositions are selected from the group consisting of cleansers, toners and combinations thereof.

9. The method of claim 7 wherein the one or more protective compositions are selected from the group consisting of sunscreens, sun blocks, moisturizers and combinations thereof.

10. The method of claim 7 wherein the first corrective composition comprises an active ingredient that is sensitive to oxidation; a preservative; a chelating agent; an emulsifier; a humectant; a pH adjuster; an antioxidant; an emollient; a reducing agent and water.

11. The method of claim 7 wherein the first corrective composition comprises hydroquinone.

12. The method of claim 7 wherein the second corrective composition further comprises a preservative; a chelating agent; an emulsifier; a humectant; a pH adjuster; an antioxidant; an emollient; a reducing agent and water.

13. The method of claim 7 wherein the first active ingredient is hydroquinone.

14. The method of claim 7 further comprising the step of waiting at least four hours between the first treatment and the second treatment.

15. The method of claim 7 further comprising

post-treating the skin of the subject treated with a radiation or photodynamic skin cancer treatment by administering to the area of skin a first treatment and, after a predetermined period of time, a second treatment,

the first treatment comprising the sequential topical application of one or more preparatory compositions, a first corrective composition, and one or more protective compositions;

the second treatment comprising the sequential topical application of one or more preparatory compositions, and a second corrective composition,

wherein the second corrective composition comprises a first active ingredient sensitive to oxidation and tretinoin.

16. A method comprising:

preconditioning an area of skin of the subject by administering to the area of skin a first treatment and, after a predetermined period of time, a second treatment,

the first treatment comprising the sequential topical application of a cleanser, a toner, a first corrective composition containing hydroquinone, and a protective composition;

the second treatment comprising the sequential topical application of a cleanser, a toner, a second corrective composition comprising hydroquinone and a retinoid; and

performing a radiation or photodynamic therapy skin cancer treatment on the preconditioned area of skin whereby preconditioning the skin reduces side effects associated with the skin cancer treatment compared to skin that is not preconditioned for receiving a skin cancer treatment.

17. The method of claim 16 further comprising post-treating the area of skin subjected to the skin cancer treatment by administering to the area of skin a first treatment and, after a predetermined period of time, a second treatment,

the first treatment comprising sequential topical application of a cleanser, a toner, a first corrective composition containing hydroquinone, and a protective composition;

the second treatment comprising sequential topical application of a cleanser, a toner, a second corrective composition comprising hydroquinone and a retinoid.

18. The method of claim 16 wherein the first pre-conditioning treatment occurs in the morning.

19. The method of claim 18 wherein second pre-conditioning treatment occurs at least four hours after the first pre-conditioning treatment.

20. The method of claim 17 wherein the first post-treating treatment occurs in the morning.

21. The method of claim 20 wherein second post-treating treatment occurs at least four hours after the first post-treating treatment.