Formulation Advice for Aloe Vera Gel Base

Based on your question and the ingredients you have (Glucosamine (N-acetyl-D), Vitamin B3 (Niacinamide), Alpha Arbutin, and Green Tea Extract) and your Aloe Vera Gel base, you can certainly mix these ingredients into your base.

The combination of ingredients you have chosen is well-suited for your goals of achieving brighter skin and reducing red and dark spots from acne:

• Alpha Arbutin: This is a key ingredient known for its skin brightening properties and ability to reduce various dark spots by inhibiting melanin production.
• Vitamin B3 (Niacinamide): Excellent for reducing redness and dark spots left by acne. It also helps strengthen the skin barrier, has anti-inflammatory effects, and can help control oiliness, which is beneficial for acne-prone skin.
• Glucosamine (N-acetyl-D): Works synergistically with Niacinamide to improve skin tone and reduce hyperpigmentation. It also helps boost skin hydration by stimulating hyaluronic acid production.
• Green Tea Extract (EGCG): Provides antioxidant and anti-inflammatory benefits, helping to soothe the skin and support the healing process of acne marks.

Regarding whether you should remove or add anything, the ingredients you currently have work effectively together for your stated goals. As suggested previously, you can start with this combination. If you find you need more help specifically with reducing redness, adding Licorice Extract is a good option to consider later, as it is known for its anti-inflammatory and redness-reducing properties.

Remember to follow the recommended usage concentrations for each ingredient to ensure optimal efficacy and safety when mixing them into your Aloe Vera Gel base.