Hypoallergenic and non-irritant skin care formulations
AssigneePatrick Franke
InventorPatrick Franke
Life of this patent
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Abstract
The invention provides novel hypoallergenic and non-irritant medical skin care formulations being water-in-oil emulsions. The formulations are free from ingredients with a known allergenic potential, such as fragrances, preservatives, colorings, plant extracts, PEGs, cetylstearyl alcohol, lanolin alcohol, lower alcohols and proteins, thus being particularly suitable for patients with sensitive dry skin. The skin care formulations of the invention are useful in the prophylaxis and treatment of dry, sensitive skin or in the therapy or therapy support of eczematous or psoriatic skin and exhibit favorable sensorial properties. The invention furthermore provides a method of manufacturing the novel hypoallergenic and non-irritant skin care formulations.
Claims15
A hypoallergenic and non-irritant skin care formulation, wherein the formulation:
- a) is free from fragrances, preservatives, colorings, plant extracts, PEGs, cetylstearyl alcohol, lanolin alcohol, lower alcohols and proteins;
- and
- b) comprises a water phase dispersed in an oil phase,
- wherein the oil phase comprises:
- 1-8 wt % cetearyl octanoate,
- 1-5 wt % dicaprylyl ether,
- 6-20 wt % caprylic/capric triglyceride,
- 1-4 wt % polyglyceryl-3-diisostearate and
- 2-6 wt % polyglyceryl-2-dipolyhydroxystearate,
- wherein the water phase comprises:
- purified water,
- 0.2-2 wt % magnesium sulfate,
- 0-2 wt % lactic acid and
- 0.5-7 wt % sodium lactate.
A semi-solid skin care formulation comprising the following ingredients expressed as a percent by weight (% w/w) range:
- (1) oil phase:
- a) petrolatum:
- 2-5%
- b) cetearyl octanoate:
- 2-5%
- c) dicaprylyl ether:
- 1-3%
- d) caprylic/capric triglyceride:
- 5-10%
- e) cera alba:
- 1.0-2.5%
- f) polyglyceryl-3-diisostearate:
- 4-5%
- g) polyglyceryl-2-dipolyhydroxystearate:
- 1-2%
- h) ethylhexylglycerin:
- 0-0.8%
- (2) water phase:
- a) glycerin:
- 0-5%
- b) magnesium sulfate:
- 0.5-1.5%
- c) lactic acid:
- 0.05-1.5%
- d) sodium lactate:
- 1-5%
- e) purified water:
- add to 100%.
A semi-solid skin care formulation, wherein the formulation comprises the following ingredients expressed as a percent by weight (% w/w) range:
- (1) oil phase:
- a) petrolatum:
- 2-5%
- b) cetearyl octanoate:
- 2-5%
- c) dicaprylyl ether:
- 1-3%
- d) caprylic/capric triglyceride:
- 5-10%
- e) cera alba:
- 1.0-2.5%
- f) polyglyceryl-3-diisostearate:
- 4-5%
- g) polyglyceryl-2-dipolyhydroxystearate:
- 1-2%
- (2) water phase:
- a) glycerin:
- 0-5%
- b) magnesium sulfate:
- 0.5-1.5%
- c) lactic acid:
- 0.05-1.5%
- d) sodium lactate:
- 1-5%
- e) propylene glycol:
- 5-10%
- f) purified water:
- add to 100%.
A semi-liquid skin care formulation comprising the following ingredients expressed as a percent by weight (% w/w) range:
- (1) oil phase:
- a) cetearyl octanoate:
- 2-5%
- b) dicaprylyl ether:
- 1-3%
- c) caprylic/capric triglyceride:
- 8-15%
- d) polyglyceryl-3-diisostearate:
- 1.5-3%
- e) polyglyceryl-2-dipolyhydroxystearate:
- 3-5%
- f) ethylhexylglycerin:
- 0-0.8%
- (2) water phase:
- a) glycerin:
- 0-5%
- b) magnesium sulfate:
- 0.5-1.5%
- c) lactic acid:
- 0.05-1.5%
- d) sodium lactate:
- 1-5%
- e) urea:
- 0.5-10%
- f) purified water:
- add to 100%.
A method of manufacturing a hypoallergenic and non-irritant skin care formulation comprising the steps of:
- a) preparing an oil phase by melting:
- 1-8 wt % cetearyl octanoate,
- 1-5 wt % dicaprylyl ether,
- 6-20 wt % caprylic/capric triglyceride,
- 1-4 wt % polyglyceryl-3-diisostearate and
- 2-6 wt % polyglyceryl-2-dipolyhydroxystearate,
- b) preparing a water phase by heating purified water and dissolving therein
- 0.2-2 wt % magnesium sulfate,
- 0-2 wt % lactic acid and
- 0.5-7 wt % sodium lactate
- while stirring and adjusting the pH value of the resulting solution with lactic acid to about 4.4-4.8;
- c) preparing a water-in-oil emulsion by transferring the melted oil phase from step (a) to the heated water phase of step (b) and,
- while stirring and homogenizing, cooling the emulsion down to room temperature while applying a vacuum of about −0.6 to −0.9 bar.
Dependencies are inferred from the claim text.