When using bakuchiol, there are a few ingredients that you should avoid combining with it to prevent any potential adverse effects or interactions. Here are some ingredients to steer clear of when incorporating bakuchiol into your skincare routine:

1. Retinoids: Bakuchiol is often touted as a natural alternative to retinol, but using them together may lead to excessive skin dryness, irritation, or sensitivity. It's best to choose one or the other and alternate their usage.

2. Vitamin C: While both bakuchiol and vitamin C offer antioxidant benefits, combining them in high concentrations may cause skin irritation. If you wish to use both, consider using them at different times of the day or on alternate days.

3. AHAs/BHAs: Alpha hydroxy acids (AHAs) and beta hydroxy acids (BHAs) are exfoliating ingredients commonly found in chemical peels or toners. Using them alongside bakuchiol may increase the risk of skin irritation, so it's advisable to separate their usage or consult a dermatologist.

4. Strong Acids: Harsh acids like salicylic acid or glycolic acid can potentially disrupt the skin's barrier function when used alongside bakuchiol. It's best to avoid using them together to prevent excessive dryness or irritation.

5. Peptides: While there is no concrete evidence suggesting negative interactions between bakuchiol and peptides, it's advisable to use them separately. If you wish to incorporate both, apply them in different steps of your skincare routine.

Remember, it's always a good idea to patch test new products and ingredients before incorporating them fully into your skincare routine. Additionally, consulting with a dermatologist can provide personalized advice based on your skin type and concerns.