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I have oily, acne-prone skin that is currently sensitive and irritated from acne treatments (medication like BHA, Differin, BP 2.5, and potentially laser). My current facial...
I have mixed Salicylic Acid, Propylene Glycol, and Betaine. I have a few questions about this mixture: * Does BHA need to be stored in a dark glass bottle? Can it be stored in...
I have several questions about formulating skincare products, particularly a serum for sensitive skin. 1. Why are some active ingredients not available in ready-to-use bases?...
I want to create a serum for oily skin with clogged pores, blackheads/whiteheads, and large pores, to be applied before other skincare products. I am considering using Beta...
I would like to ask the admin about a whitening product I encountered. It primarily contains Niacinamide 4%, Lactic acid, Soybean, Licorice, and Tretrahydropyranyloxy Phenol. I...
Regarding the use of Ceramide Complex (SK-Influx V) in ready-to-use products, I would like to clarify the following: 1. Will Ceramide Complex be added as an option for...
I would like to request a review of my proposed Double Hyaluronic Gel formulation and mixing method. I also have a question about the usage of BHA. My proposed formula...
I would like to know the stability information for the following ingredients: 1. What is the pH tolerance for **Calendula Extract (Certified Organic)**, and what temperature...
I have two additional questions: 1. Is it effective to use crushed **Vitamin C 500mg** tablets mixed with water as a face mask? 2. Can **Rose Hip Oil** be used for old acne scars?
I am making several serums based on shop recipes, including: * A Vitamin C serum (likely the `Skinceuticals C E Ferulic` type) from which I omitted `Hyaluronic Acid` * A BHA...
I am developing a moisturizer formulation for dry, red, and peeling skin, and I have sensitive skin. I plan to use the following ingredients: 1. Hya (two types) 2. sodium...
I have dry, sensitive skin with acne scars on my back. I'm interested in using natural oils like Rose Hip Oil, Apricot Kernel Oil, Avocado Oil, and Sweet Almond Oil to address...
I am trying to formulate a water-free Vitamin C serum similar to the Kiehl's formula. I plan to use a base of Propylene Glycol, Cyclopentasiloxane, and Glycerin. My questions...
I want to mix Hyaluronic Acid, Ferulic Acid, and Vitamin C to make a DIY skincare product. How can I mix these ingredients? What are the challenges in mixing these substances,...
I want to formulate a product to treat clogged and inflamed acne and also achieve brighter, less dull skin. Could you please provide guidance on: 1. Using Salicylic Acid (BHA)...
I have recurring clogged and inflamed acne. I am currently using a serum with Niacinamide, Betaine, Raffinose, Green tea extract, Cucumber extract, Gotu Kola Extract, Urea, and...
I experienced skin tightness, bumps, and a rash after using a homemade solution of Hyaluronic Acid (HA) powder mixed with water. I would like to understand the potential causes...
I am new to cosmetic formulation and have several questions: 1. When mixing, how should I perform the warming/heating process (e.g., using a water bath) to help dissolve...
I am looking for natural alternatives to Propylene Glycol for my cosmetic formulation. 1. Are there any directly plant-derived versions of standard Propylene Glycol? 2. Could...
I have very sensitive skin. Was a preservative added to the sensitive skin serum formula? If not, how should it be stored to ensure shelf life?