Can Lady in red serum be used with isotec treatment?

There are no contraindications. The serum has the right pH for facial skin and will not dry it out. Also noteworthy is Acne serum, which is not based on acids but on niacinamide and up to 12 plant extracts. It is in gel form, so it will work perfectly as a base for a cream. Biome serum is also worth recommending. It increases the population of good bacteria, which benefits the skin. It is very mild and, like Acne serum, contains no fragrance.