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If a substance in a syringe has a shelf life of 60 days, will transferring it to a plastic bottle extend its shelf life?
I am formulating an anti-aging serum using Silky Serum Base Plus and including the following ingredients: * Retinal (Retinaldehyde) 0.1% * Protec™ OX 0.05% * Methylsilanol...
I am formulating a Foundation/BB cream. I modified the powder blend and added Zinc Oxide into the formula. The resulting cream is very thick, feels dry, and pills when applied....
Regarding red organic pigments for lipstick: 1. What are they made from? 2. Are they truly "organic" (natural) in origin? 3. Will they cause irritation when used in lipstick?...
I want to add DHHB (Diethylamino Hydroxybenzoyl Hexyl Benzoate) to my formula to increase UVA protection and improve the PA value. However, I understand that DHHB is difficult...
I am experiencing two issues when using TaraGel (Caesalpinia Spinosa Gum) in my formulations: 1. TaraGel powder precipitates (settles at the bottom) when mixed with DI water....
When formulating a cream, if I add heat-sensitive ingredients after the emulsification process is complete and the cream has cooled down (specifically below 60°C as I plan),...
I am making cold-process soap and want to add ingredients to help reduce itching from skin allergies in children. Based on my research, I found Chamomile and Calendula. 1....
I have a skincare formula for dry, tight skin with wrinkles. I want to achieve a "clear, youthful face". My formula includes Vitamin E at 2% and Water Lock at more than 2%. Is...
Following the explanation regarding the usage percentage of active ingredients like Pitera and Vitamin B5 in formulations, I would like to know the maximum percentage of...
Could you explain why some Salicylic Acid formulas, like the Paula's Choice one I saw, use high percentages of Dipropylene glycol and Pentylene glycol? Also, how should I...
When will the Rhamnose (rhamnose sugar) product be back in stock?
I have several questions regarding formulation and ingredients: 1. What is the typical texture provided by `Glyceryl Stearate Citrate`? Is it thick, medium, or liquid? I need...
I want to make an oil-based lip balm (anhydrous formula). If I want to add flavor, do I need to use a preservative, especially if the flavor contains water?
I want to make a clear gel sunscreen without silicone. Can I mix **SPF Protect Ultra™ II** into **Aloe Vera Gel (Heavy)** to achieve this?
I would like to know if the following cosmetic ingredients can all be mixed together. If so, do the proportions need to be adjusted? * Willow Bark Extract (Natural Salicylic...
I am formulating a gentle cat shampoo using the following ingredients: * Disodium EDTA * Lauryl Glucoside * Coco Glucoside * Gluta Clean * Cocamidopropyl Betaine * Coco Foam *...
What is the correct usage rate for Soap Nut Extract in a formulation? What happens if less than 5% or more than 20% is used?
Regarding a formula based on Oil Soap (likely MIPA Laureth Sulfate) intended for very dry/itchy skin: 1. Can `Panthenol (Pro Vitamin B5)` 1.5% be added to this formula? 2. If...
Based on the previous discussion regarding dissolving ingredients below 50°C: 1. Does the rule of dissolving ingredients at temperatures not exceeding 50°C (where if it doesn't...
